Website development services

Website Development for UK Organisations

Marketing sites and web platforms that load fast, work for everyone and let your team publish without a developer — rebuilt or relaunched without throwing away the search traffic you already have.

  • Core Web Vitals measured before and after launch
  • Built and tested to WCAG 2.2 AA
  • Every old URL mapped before anything moves

Why websites underperform

Where websites quietly lose visitors and enquiries.

The design gets the attention. The things that decide whether a site actually works — speed, accessibility, structure, tracking — are usually left to the last week of the project, or to nobody.

What a well-built site gives you

Get the foundations right once, and every page and campaign after launch benefits:

  • Pages built to pass Core Web Vitals on mobile
  • Editors who publish without raising a ticket
  • Accessibility built into components, not patched page by page
  • Analytics you can trust, collected with consent
  • A redirect map that protects the rankings you have earned

Slow on the phones people use

Heavy themes, page builders, oversized images and a dozen third-party scripts. Fine on office broadband, sluggish on a mid-range phone on 4G — which is how many visitors actually see it.

Every edit needs a developer

Marketing waits days for a landing page or a price change because the CMS is fragile, the templates are rigid, or only one person knows how the site hangs together.

Barriers for disabled visitors

Missing labels, poor contrast, keyboard traps and inaccessible PDFs shut people out — a risk under the Equality Act, and a stumbling block with public-sector and enterprise buyers.

Rankings lost in a relaunch

A redesign changes URLs without redirects, drops pages that ranked, or ships with the staging site’s "noindex" still in place. Traffic built over years can fall away at go-live.

What we deliver

Everything a website needs, from content model to launch.

Marketing sites, content platforms and customer-facing web platforms, built from your designs or ours. Every build ships with performance budgets, accessibility checks and analytics agreed before launch — not bolted on afterwards.

How we work

How a website build runs, stage by stage.

The same seven stages as every build, with website work inside each: a content and URL inventory first, performance and accessibility targets set before design, and a redirect plan signed off before launch day.

  1. 01

    Discovery

    We inventory what exists — pages, URLs, traffic, rankings, forms, integrations and tracking — and talk to the people who edit the site, so nothing valuable is lost in the rebuild.

    A content and URL inventory with priorities

  2. 02

    Strategy

    We choose the platform and CMS around who edits the site and how often, set performance and accessibility targets, and decide which content to migrate, merge or retire.

    Platform choice, targets and a new sitemap

  3. 03

    UX & architecture

    Page templates, a content model and a component library designed together, so editors assemble pages from blocks that are already fast, accessible and on-brand.

    Content model, templates and components

  4. 04

    Development

    Two-week sprints with a demo at the end of each, code review on every change, and a staging environment your team can use.

    Working software every sprint

  5. 05

    Testing

    Automated and manual accessibility checks with keyboard and screen readers, Core Web Vitals on real devices, and forms, tracking and consent tested end to end.

    Accessibility and performance reports

  6. 06

    Launch

    Redirects live and tested, sitemaps submitted, Search Console and analytics checked on the day, and a rollback plan ready in case anything unexpected appears.

    A launch checklist, completed and signed off

  7. 07

    Optimisation & support

    We watch crawl errors, rankings and field performance in the weeks after launch, fix what surfaces, and train editors so the site stays fast as content grows.

    Post-launch monitoring and trained editors

Technology

What our websites are built with.

Chosen for speed, accessibility and ease of editing — and for what your team can look after once we hand over.

Front end

Next.js and ReactTypeScriptVue and SvelteStatic and server rendering

Content management

SanityHeadless WordPressTraditional WordPressPreviews and scheduled publishing

Commerce

Shopify (headless)WooCommerceMagentoStripe

Performance

Core Web Vitals field dataImage and font optimisationEdge cachingPerformance budgets in CI

Accessibility and SEO

WCAG 2.2 AAKeyboard and screen-reader testingStructured dataSitemaps and canonicals

Hosting and delivery

VercelAWSNGINXGitHub Actions

If a well-configured WordPress site or a hosted site builder will do the job, we will say so. A headless build earns its place with several channels, heavy traffic, or strict performance and security needs.

Use cases

Websites UK organisations come to us for.

Different starting points, same foundations: fast pages, accessible components, clean tracking and an editing experience your team will actually use.

B2B and professional services

A company site that wins enquiries

Service pages, case studies and articles built from reusable blocks, with forms that land in your CRM and tracking that shows which pages produce enquiries.

Growing brands

Replatforming without losing rankings

Moving from an ageing WordPress theme or a site builder to a faster stack, with every old URL redirected and search performance watched through the switch.

Charities and membership bodies

An accessible content platform

A site that works for disabled visitors and older devices, with donation or membership journeys and editors spread across several teams.

Suppliers to the public sector

Accessibility evidence for tenders

Remediation to WCAG 2.2 AA and a clear accessibility statement, so the website stops being the weak point in bids to public bodies and large enterprises.

Retail and direct-to-consumer

A headless shop front

A fast, custom front end over Shopify or WooCommerce, keeping the platform’s checkout and back office while you control the design and the speed.

Groups and multi-brand businesses

One CMS behind several sites

Group, brand and regional sites from one content model and one component library, so updates happen once and every site stays consistent.

Why Techsleight

What working with us is actually like.

No inflated numbers — just how we run projects, and what you can hold us to.

Product engineering, not ticket-taking

We ask what the software is for before we estimate it — and we will tell you when something should not be built, or should be bought instead.

AI where it earns its place

LLM features, retrieval and automation built with evaluation, guardrails and cost controls, and plain software where that is the better answer.

Full-stack under one roof

Design, frontend, backend, mobile, cloud and QA in one team, so nothing falls between suppliers.

UK-focused delivery

UK business hours, estimates in pounds, and a contract with a UK company. Our engineers are based in the UK and India.

Flexible engagement

A fixed-scope project, dedicated developers or a monthly retainer — and you can move between them as the work changes.

You own everything

Code, IP, cloud accounts and documentation are yours from day one. We sign an NDA before discovery if you need one.

Support after launch

We stay on for fixes, upgrades and new features, or hand over cleanly to your in-house team with the documentation to match.

FAQs

Questions we get asked.

Straight answers on scope, cost, timelines and how we work. If yours is not here, ask us directly.

Ask us a question

How much does website development cost in the UK?

It depends on the number of page templates, the integrations, how much content needs migrating and whether design is included. A discovery sprint from £2,000 produces a sitemap, a content model and a fixed-price quote. Improvements to an existing site can run on flexible hours from £20 an hour.

How long does it take to build a website?

We plan in two-week sprints with a demo at the end of each. A focused marketing site is usually measured in weeks rather than months; large content migrations, multi-site builds and complex integrations take longer. After discovery you get a dated plan rather than a guess.

Should we use WordPress or a headless CMS?

WordPress on its own suits many sites: familiar to editors, inexpensive to host and backed by a huge plugin ecosystem. A headless setup — Sanity or WordPress as the content source with a Next.js front end — suits sites that need top performance, several channels or a smaller security surface. We recommend based on who edits the site and what it has to do.

Will we lose our Google rankings if we rebuild the site?

The risk comes from how the migration is handled rather than from the rebuild itself, and it is manageable. We map every old URL to its new home with permanent redirects, keep the content that ranks, carry over metadata and structured data, and watch Search Console and traffic after launch. Nobody can promise rankings, but these steps remove the usual causes of a post-launch drop.

Does our website have to be accessible by law?

The Equality Act 2010 requires service providers to make reasonable adjustments for disabled people, and that includes services delivered online. Public sector bodies also have specific duties under the 2018 accessibility regulations. WCAG 2.2 AA is the standard most organisations work to, and we build and test to it — legal questions stay with your own adviser.

What are Core Web Vitals, and do they matter?

They are Google’s measures of real-user experience: how quickly the main content appears (LCP), how fast the page responds to taps and clicks (INP) and how much the layout shifts while loading (CLS). They feed into Google’s page experience signals, but the bigger cost of a slow page is visitors who leave before it loads.

Do we need a cookie banner?

If the site sets non-essential cookies or similar tracking — most analytics and advertising tags do — PECR generally requires consent first, and the ICO expects rejecting to be as easy as accepting. Some low-risk analytics may not need consent, with conditions, so we configure consent against the ICO’s current guidance and check that tags genuinely wait for it.

Can you build from our own or our agency’s designs?

Yes. We can build from Figma files produced by your in-house team or an agency. We review the designs early for performance, accessibility and responsive behaviour, so issues are resolved in the design file rather than discovered halfway through the build.

Can our team update the site without a developer?

That is what the content model is for. Editors build pages from approved blocks, preview before publishing, schedule changes and manage media, while the component library keeps pages fast and on-brand. We train editors at handover and leave a short guide for new starters.

Who owns the website once it is live?

You do: code, content, design files, domain, hosting and analytics accounts. Everything is set up under your accounts from the start, so you can keep us on for support or move to another supplier without anything to untangle.

Start a project

Planning a new website or a rebuild?

Send us the current site, if there is one, and what it needs to do better. You will get an honest view on platform, scope and migration risk — whether or not we turn out to be the right team.

  1. 1A senior engineer reads your brief within one working day, and replies with questions or a first view.
  2. 2A 30-minute call to understand the goal, constraints and what good looks like — no sales script.
  3. 3A written proposal with scope, milestones, team and a GBP estimate you can take to your board.

Techsleight Labs is a trading name of Krapton IT Consultancy.

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