Capability 03 of 05 · Designed, tested, built

Experience Design & Development

Opinions are cheap. Put it in front of someone.

Experience Design & Development takes an idea through research, interaction design and a working front end in short, rigorous loops. Each loop ends with something a real user can try, so the expensive decisions are made on evidence rather than on taste.

Typical length
8–16 weeks
Scope
Research · design · front end
Standard
WCAG 2.2 AA
Prototype test · Round 2 of 2Illustrative

An illustrative usability test grid: four tasks attempted by six participants across two rounds, with task success rising after the prototype was changed.

Round 2Round 2, after three fixes: 21 of 24 completed unaided. The relabelled “Switch to Scale” passed for 5 of 6.

What it covers · 6 parts

Six practices, one loop

Research, design, content and front-end engineering run in the same fortnight rather than in a relay, so what is designed is what ships.

A person entering details into a form on a phone
01 / 06

User research & usability testing

Moderated and unmoderated sessions, diary studies and benchmark tests, run on a cadence rather than once at the end.

Continuous discovery
02 / 06

Information architecture & journeys

Navigation, taxonomy and end-to-end journeys across channels, validated with tree testing and first-click studies.

IA · journeys
03 / 06

Interaction & interface design

Screens, states and motion designed in your design system, including the empty, loading, error and offline states most work forgets.

Every state
04 / 06

Content & UX writing

The words in the interface written with the design: labels, guidance, errors and confirmations that read the same in every locale.

Microcopy · clarity
05 / 06

Prototyping

From clickable flows to coded prototypes on live data, at whatever fidelity the open question needs.

Click · coded
06 / 06

Front-end build & design QA

Accessible, performant front-end code built from the same components, with visual and accessibility regression tests in CI and a design QA pass before release.

React · WCAG 2.2 AA

How it runs

Two-week loops, each ending in evidence

Every loop carries one question, one thing to try and a session with users. The backlog is rewritten by what comes back.

  1. Understand Wk 01–02

    Existing research, analytics and support data reviewed, participants recruited, and a benchmark taken of the journey being changed.

    • Research plan
    • Baseline benchmark
    • Participant panel

    Gate · Do we know the benchmark to beat?

  2. Design Wk 02–08

    Journeys, screens and content designed in the system, prototyped and tested every fortnight. Accessibility reviewed at design, not after.

    • Journey maps
    • Interface designs
    • Test findings

    Gate · Did the prototype pass its test round?

  3. Build Wk 06–14

    Front-end engineering alongside design, with components contributed back to the design system and automated accessibility and visual checks on every merge.

    • Front-end code
    • Component contributions
    • CI checks

    Gate · Does the build meet the accessibility bar?

  4. Validate Wk 14–16

    A release behind a flag, the benchmark repeated, and task success, time on task and error rate read against the baseline.

    • Release
    • Benchmark comparison
    • Improvement backlog

    Gate · Did task success beat the benchmark?

Timings are typical and shorten when the evidence already exists.

Usability findings · what you will see

Every finding has a severity, an owner and a fix.

What a test round produces: each problem seen, how many participants hit it and whether the fix held when we tested again.

Findings board · Checkout · round 2 of 2Illustrative

Critical 1

  • Delivery date hidden below the fold on small phones

    Task 2 · 4 of 6 missed it

    Owner: design · fixing

Serious 2

  • Promo code field read as required

    Task 3 · 3 of 6 paused

    Owner: content

  • Error on card number clears the whole form

    Task 4 · 2 of 6

    Owner: front end

Minor 1

  • “Continue” and “Next” used for the same action

    All tasks · noted

    Owner: content

Fixed and retested 1

  • Address lookup ignored flat numbers

    Round 1: 5 of 6 failed

    Round 2: 6 of 6 passed

Illustrative example of a findings board. Participant counts are per task in a six-person moderated round.

What you keep

Designed, built and tested. Handed over as working code.

Journeys, the prototype that proved them and the production front end, with the test evidence attached.

A hand sketches screen layouts and the arrows between them on a sheet of paper
The flowsketched before it is built

/handover/03-experience/

Experience Design & Development

  • Research plan, findings & session clipsReport · clips
  • Journey maps & information architectureFigma
  • Interface designs with every stateFigma
  • UX copy & content guidelinesDoc · Figma
  • PrototypesFigma · coded
  • Front-end code & componentsYour repos · Storybook
  • Accessibility report & fixesWCAG 2.2 AA
  • Usability benchmarkSheet · Dashboard

/handover/README

In every handover

  • Decision record, with evidence linksDoc
  • Assumption tracker, final statesSheet
  • Research consent & retention logSheet
  • Walkthrough session, recordedVideo

What changes

People finish what they came to do. Three measures that show it.

The same tasks are timed before and after release, so the improvement is measured, not described. Baseline, target and instrument are agreed in week one.

  1. Outcome 01

    Decisions backed by sessions

    Every significant change was watched with users before it shipped, and the recording exists to settle the argument later.

  2. Outcome 02

    Usable by more people

    Keyboard, screen-reader, contrast and target-size checks run in the same pipeline as the tests, so accessibility does not regress quietly.

  3. Outcome 03

    Design that survives the build

    Designers and front-end engineers in one loop, so what is drawn and what ships are the same thing.

Outcome review · Your companyIllustrative
  • 01 Task success, key journeysSame tasks, unmoderated, benchmark vs release
    89%from 61%target 85%
  • 02 WCAG 2.2 AA criteria metAutomated checks plus manual keyboard and screen-reader pass
    100%from 68%target 100%
  • 03 Screens matching the approved designDesign QA against the Figma source
    94%from 55%target 90%
Scale 0–100 on every row; row numbers match the outcomes. Figures are illustrative examples of the measures we set, not client results.

The stack

From Figma to production. One component set the whole way.

Design, prototyping, front-end and testing tools we use most for experience work, in your repositories. Technologies we work with, not partnerships.

  • Figma
  • Storybook
  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Cypress
  • Lighthouse
  • PostHog
  • Mixpanel
  • Miro
  • Notion
  • Playwright

Frameworks we build to

Accessible and fast by default. Checked in the build, not after it.

Frameworks every journey is built and tested to. Frameworks we build to, not certifications we hold.

  • WCAG 2.2 AAWeb Content Accessibility Guidelines

    Perceivable, operable, understandable and robust content, including 2.2 criteria such as focus not obscured, target size and accessible authentication.

    How we apply itContrast, focus order and target size checked in the design file, then keyboard and screen-reader passes on every key journey before sign-off.

  • Core Web VitalsLoading, interactivity and visual stability

    Good at the 75th percentile of page loads: LCP ≤ 2.5 s, INP ≤ 200 ms, CLS ≤ 0.1.

    How we apply itLCP, INP and CLS budgets written into the design spec per template, and checked at p75 in field data after release.

  • ISO 9001:2015Quality management systems

    Requirements for a quality management system built on process control, risk-based thinking and continual improvement.

    How we apply itEvery stage ends at a written gate with an owner, and design QA against the approved source before anything is called done.

  • GDPRGeneral Data Protection Regulation (EU) 2016/679

    Lawful basis, data-subject rights, data protection by design and by default, breach notification and DPIAs for high-risk processing.

    How we apply itResearch participants give recorded, specific consent; recordings and notes have a retention date and are deleted on it.

  • DPDP Act 2023Digital Personal Data Protection Act, 2023

    Notice and consent, duties of data fiduciaries, rights of data principals, breach intimation and added duties for significant data fiduciaries, with the DPDP Rules.

    How we apply itConsent notices for India-based participants and users, with data-principal requests answerable from the research log.

Services & packages

Research, design and front end, in one loop.

Commission a single round of research, the design of a whole product, or a team that designs and builds the front end together. Every engagement ends with something a real user has tried.

Categories
05
Services
18
Packages
05
Not sure what you need? Describe the problem

How to buy

  1. 01Pick services. Enquire about one, or add several to a brief.
  2. 02Choose how to engage. A sprint, a fixed project or an ongoing team.
  3. 03Send the brief. We reply within one working day.

Browse by category

Timelines are typical. Every quote follows a written scope.

01Research

4 services
Typical timeline: Ongoing · monthly

User research programme

A standing research habit rather than a one-off study: a recruited panel, a regular cadence and a repository your team can search.

What’s included

  • Participant panel and recruitment
  • Consent, incentives and data retention handled
  • Fortnightly or monthly sessions
  • Searchable repository with tagged findings
  • Continuous discovery
  • Panel
  • Repository

Best forTeams who want evidence every sprint, not once a year.

Typical timeline: 2–3 weeks

Usability testing round

One round of moderated or unmoderated sessions on a specific journey, written up as a prioritised list of what to fix.

What’s included

  • Test plan and task scripts
  • Recruitment of five to eight participants
  • Moderated or unmoderated sessions
  • Findings, clips and a prioritised fix list
  • One round
  • Moderated · unmoderated

Best forTeams about to build something nobody outside the room has tried.

Typical timeline: 3–5 weeks

Usability benchmark

A repeatable measure of how the product performs today, so the next release can be judged against a number rather than a feeling.

What’s included

  • Task set defined with your team
  • Quantitative study with a larger sample
  • Task success, time on task and error rate
  • Standard usability score such as SUS or UMUX-Lite
  • Quantitative
  • Baseline

Best forTeams starting a redesign that will have to prove it worked.

Typical timeline: 3–5 weeks

Accessibility user testing

Sessions with disabled participants using their own assistive technology, which finds the barriers an audit against the guidelines never will.

What’s included

  • Recruitment across assistive technologies
  • Sessions with screen reader, magnifier and switch users
  • Barriers mapped to journeys and components
  • Fixes written into the component backlog
  • Assistive tech
  • Lived experience

Best forOrganisations that pass automated checks and still get complaints.

02Design

5 services
Typical timeline: 8–16 weeks

End-to-end UX & UI design

The full design of a product or a major journey: structure, screens, content and every state, tested with users as it is drawn.

What’s included

  • Information architecture and journeys
  • Interface design with empty, loading, error and offline states
  • UX writing for labels, guidance and errors
  • Testing rounds through the project
  • Handover with acceptance criteria
  • UX · UI
  • Every state
  • Handover-ready

Best forTeams building a new product or rebuilding a journey that fails.

Typical timeline: 10–20 weeks

Product or app redesign

A redesign planned to ship in stages behind flags, so value arrives early and the risk of a big-bang replacement is avoided.

What’s included

  • Baseline usability benchmark
  • Journey-by-journey redesign plan
  • Designs and prototypes per stage
  • Rollout and migration plan
  • Benchmark repeated after release
  • Staged
  • Benchmarked
  • Playwright

Best forProducts that have grown well past their original design.

Typical timeline: 4–8 weeks

Information architecture & navigation

The structure underneath the product: what is called what, where it lives and how people find it, validated before the screens are drawn.

What’s included

  • Content and feature inventory
  • Card sorting and tree testing
  • Navigation model and taxonomy
  • First-click validation of the new structure
  • IA
  • Tree tested

Best forProducts or sites where people use search because navigation fails.

Typical timeline: 3–6 weeks

UX writing & content design

The words in the interface written with the design: labels, guidance, empty states, errors and confirmations that work the first time.

What’s included

  • Content audit of the key journeys
  • Rewritten interface copy in the designs
  • Error and edge-case message set
  • Content guidelines and terminology list
  • Microcopy
  • Guidelines

Best forProducts where support answers the same question every week.

Typical timeline: 3–6 weeks

Interface motion design

Transitions, loading and feedback designed to explain what just happened, with a reduced-motion path that is a first-class experience.

What’s included

  • Motion principles and timing scale
  • Key transitions specified for engineering
  • Reduced-motion behaviour defined
  • Reference implementations in code
  • Motion
  • Reduced motion

Best forProducts where state changes leave people unsure what happened.

03Prototypes

3 services
Typical timeline: 1–3 weeks

Clickable prototype

A prototype in Figma good enough to test a flow with customers, or to show a stakeholder what is actually being proposed.

What’s included

  • Key flows wired end to end
  • Realistic content rather than placeholder text
  • Variants for the options under discussion
  • Ready for a testing round
  • Figma
  • Fast

Best forTeams who need to show rather than describe.

Typical timeline: 2–5 weeks

Coded prototype

A prototype in real code on real or realistic data, for the questions a Figma file cannot answer: performance, scale, live content and edge cases.

What’s included

  • Front-end prototype on your data or a realistic sample
  • The interactions that need real behaviour
  • Deployed for stakeholder and user access
  • Findings and a reuse or discard recommendation
  • Real data
  • Deployed

Best forData-heavy products where the real question is behaviour at scale.

Typical timeline: 2–4 weeks

Concept testing round

Two or three concepts put in front of customers side by side, so the choice is made on their reaction rather than on internal preference.

What’s included

  • Concepts developed to comparable fidelity
  • Test design that avoids leading participants
  • Sessions with the target segment
  • Recommendation with the evidence for it
  • Comparative
  • Evidence

Best forTeams deadlocked between two directions.

04Front end

4 services
Typical timeline: 6–16 weeks

Front-end build

The designed experience built as accessible, fast front-end code in your repositories, with the automated checks that keep it that way.

What’s included

  • Component-based front end in React and TypeScript
  • Accessibility and visual regression tests in CI
  • Core Web Vitals budgets enforced on merge
  • Design QA pass before each release
  • React
  • WCAG 2.2 AA
  • Core Web Vitals
  • Playwright

Best forTeams with designs ready and no front-end capacity to do them justice.

Typical timeline: 1–3 weeks

Design QA & polish pass

A pass over what your engineers built against what was designed: spacing, states, focus, motion and the details that make a product feel finished.

What’s included

  • Screen-by-screen comparison against the designs
  • Interaction, focus and state review
  • Ticketed findings with severity
  • Pairing sessions with your engineers
  • Polish
  • Ticketed

Best forTeams whose releases look almost, but not quite, like the designs.

Typical timeline: 4–10 weeks

Accessibility remediation

The fixing, not the finding: audit failures resolved in your code, at component level wherever possible, then retested.

What’s included

  • Fixes prioritised by how much they block people
  • Component-level remediation over page patches
  • Automated checks added to the pipeline
  • Retest and an updated conformance record
  • WCAG 2.2 AA
  • In your code
  • Playwright

Best forOrganisations holding an audit report and no capacity to act on it.

Typical timeline: 2–6 weeks

Front-end performance pass

The interface made fast where users feel it: what loads first, what blocks interaction and what shifts under their thumb.

What’s included

  • Field and lab measurement at p75
  • Bundle, image and font work
  • Interaction and layout-shift fixes
  • Budgets added to CI so it does not regress
  • Core Web Vitals
  • p75
  • Playwright

Best forProducts that test well on a laptop and badly on a phone.

05Ongoing

2 services
Typical timeline: Ongoing · monthly

Embedded design & front-end squad

Designers, researchers and front-end engineers working inside your team, on your backlog, at your cadence.

What’s included

  • Named specialists matched to your roadmap
  • Your tools, rituals and repositories
  • Scale up or down each month
  • Knowledge transfer built in from week one
  • Squad
  • Time & materials

Best forProduct teams with a clear roadmap and not enough senior hands.

Typical timeline: Ongoing · monthly

Continuous discovery retainer

A researcher and a designer running a steady loop of sessions, experiments and readouts alongside your delivery team.

What’s included

  • Regular sessions with your users
  • Findings into the backlog each sprint
  • Experiment design and readouts
  • Monthly summary for leadership
  • Retainer
  • Every sprint

Best forDelivery teams shipping faster than they are learning.

Your brief

Tick “Add to brief” on any service, choose a package, then continue. Or enquire about one service directly.

Start a project

Ways to engage. Same team, same standard.

Three ways in, from a two-minute question to a formal RFQ. Each is read in full by the lead for the work, and anything already in your brief goes with it.

Or book a thirty-minute call

What are you sending?

  1. 01

    About 2 minutes4 required answers

    For a first conversation, a press request, or anything that does not need a scope yet.

    You get A reply from a lead, not a sales queue

  2. 02Most useful

    About 8 minutes5 short steps

    Goals, audiences, a budget band and timing. Enough for us to come back with a shape, not only questions.

    You get Options and a first scope after one call

  3. 03

    About 15 minutesYour documents attached

    Your pack, your deadlines, and the procurement and security rules the work must meet.

    You get Receipt confirmed and a named bid lead

How it is priced

Each package shows how it is priced. Every engagement starts with a written scope and a quote agreed before work begins.

  • Typical length
    1–3 weeks
    Pricing
    Fixed fee
  • Typical length
    4–12 weeks
    Pricing
    Fixed price
  • Typical length
    3–9 months
    Pricing
    Fixed price per milestone
  • Typical length
    Ongoing · 6-month minimum
    Pricing
    Monthly fee
  • Typical length
    Ongoing · 3-month minimum
    Pricing
    Time & materials
Compare what each package includes
What every engagement package includes, and who it suits
PackageEvery engagement includesBest for
SprintOne fixed question, answered in one to three weeks.
  • Scope and outcome agreed before day one
  • One senior lead and the specialists the question needs
  • A working review every week
  • A decision-ready output, not a status deck
Discovery, a diagnostic, a prototype or a decision you need to make soon
ProjectA defined scope, delivered for a fixed price.
  • Statement of work with deliverables and acceptance criteria
  • A named project lead and a fixed team
  • A shared plan with dated checkpoints
  • Source files and IP transferred on delivery
Work you can describe up front: an identity, a system, a set of tools
MilestoneA larger build, split into gated phases you approve and pay for one at a time.
  • Phases with their own scope, output and sign-off
  • A go or no-go review at every gate
  • Re-planning between phases as you learn
  • Payment tied to accepted milestones
Programmes too big to fix in one contract, and teams that want control at each step
RetainerReserved monthly capacity to run, improve and extend what we built.
  • A reserved block of team time every month
  • Agreed response times for requests and fixes
  • A monthly review and a rolling backlog
  • Continuous improvement, not just upkeep
Brands and products after launch that need a steady team without hiring one
SquadA dedicated team working inside your stack, tools and sprint cadence.
  • Named specialists matched to your roadmap
  • Your tools, your rituals, your backlog
  • Scale the team up or down each month
  • Knowledge transfer built in from week one
Teams with a clear roadmap that need more senior hands, fast

Questions

Asked before the first test round.

Anything else goes straight to the people who would do the work.

Ask a question
Q01How many users do you need to test with?

Five to eight participants per round finds most usability problems in a single journey, which is why we run many small rounds rather than one large study. Benchmarks and preference tests need larger quantitative samples, and we say which kind we are running and why.

Q02Do you design in our design system or make a new one?

In yours where one exists, contributing the missing components back to it. Where there is none, we build the parts this work needs and hand them over as the start of one, which is where System Design picks up.

Q03Do you write front-end code or hand over designs?

Either. Handover includes designs, tokens, every state and acceptance criteria. When we build, it is accessible front-end code in your repositories, reviewed by your engineers.

Q04How do you handle accessibility?

WCAG 2.2 AA is the working standard: contrast and target sizes checked at design, automated checks on every merge, and manual keyboard and screen-reader passes on each key journey before release. Where it matters, we also test with disabled participants.

Q05How do you know the new experience is better?

From a benchmark taken before the work starts: task success rate, time on task, error rate and a standard usability measure such as SUS or UMUX-Lite, repeated after release and read alongside the product analytics.

Let’s build what happens next.

Tell us what you’re building. We’ll answer straight.

Book a discovery call

Three ways to start

Every engagement starts with a written scope and a quote agreed before work begins.

Choose one of the three ways above