Website Design & Development

Kosadel • London Since 2014 Website Development

Websites that load fast and convert visitors into customers

We design and build websites with clear structure, a mobile-first experience, an SEO-ready technical foundation, and conversion-first journeys. Not “pretty pages” — sales engines.

Goal: a website that clearly explains what you do, builds trust, and drives leads/sales.

UX/UI WordPress / Custom Performance SEO-ready
Goal-driven UX/UI Structure, flow, CTAs, trust.
Speed & Core Web Vitals Mobile performance, clean code.
SEO-ready Technical Foundation Schema, heading structure, indexation.
eCommerce / Leads Purchase flows, forms, automations.

Website Development at Kosadel

A great website is the centre of your digital presence. It must be clear, fast, easy to use, and measurable. Whether you want leads or eCommerce, we start with the goal and build journeys that guide the user to action.

When you need a new site or a redesign

When your site is slow, doesn’t look right on mobile, doesn’t generate enquiries, doesn’t inspire trust, or is hard to update. At that point, you don’t need “a few fixes” — you need proper architecture.

Sub-services (what we deliver in practice)

UX / IA (Content Structure) Page mapping, navigation, journeys, CTAs.
UI Design System Colours, typography, components, consistency.
WordPress Development Gutenberg blocks, templates, clean CSS/JS.
Landing Pages (CRO) Pages for ads/SEO designed to convert.
eCommerce (WooCommerce) Shop, checkout, payments, coupons, emails.
Performance & SEO Setup Speed, schema, redirects, tracking (GA4/GTM).

Process (from brief to launch)

1
Brief & goals What you sell, who you sell to, and what the user must do.
2
Structure & wireframes IA, sections, journeys, copy outline.
3
Design (UI) Page design, components, responsive layouts.
4
Build & content Development, content population, forms/CTAs.
5
QA & launch Speed, mobile checks, tracking, go-live.

KPIs we track

Conversion Rate Form Submissions Checkout Completion Page Speed Core Web Vitals Bounce Rate Organic Visibility Leads / Sales
Want a site that “works” — not just looks good?

Send us what you do, 1–2 websites you like, and your goal (leads or sales). We’ll recommend the best structure and a build plan.

Frequently Asked Questions

How long does it take to complete a website?
It depends on scope. A small website (5–7 pages) typically takes 2–4 weeks, while a larger site or eCommerce build may take 4–8+ weeks depending on content and functionality.
Will I be able to update it myself?
Yes. We build an easy-to-edit structure using WordPress/Gutenberg with clean blocks and templates, so you’re not dependent on a developer for basic updates.
Will it be SEO-ready from day one?
Yes. We implement proper heading structure, a strong technical foundation, schema where appropriate, and prepare indexation/sitemaps. SEO then grows through content and authority—but the site starts “right.”
Can you redesign without losing SEO?
Yes, with the right plan: keeping URLs where possible, adding 301 redirects where needed, auditing internal linking, and running indexation QA. The goal is an upgrade without losses.
What does post-launch support include?
It can include updates, small improvements, monitoring speed/errors, and changes to pages/blocks. We can organise this as a monthly package or ad hoc.

Website Development Packages

Prices are in GBP and exclude VAT. Domain/hosting, premium themes/plugins, long-form copywriting, photography, or multilingual setup (unless stated) are not included. Every project is defined with a clear scope, timeline, and revision rounds.

Basic Website (1–5 pages) — fast “go live” with clear CTAs Ideal for small businesses/services. Template-based, clean scope, fast delivery.
What’s Included
Scope
Built to launch quickly and correctly.
  • 1 template direction + brand adaptation
  • Up to 1–2 revision rounds (depending on scope)
  • Basic icons/visuals (light)
  • Delivery in 10–20 days (with ready materials)
Book a Consultation
Add-ons
By scope
When you need more conversion power.
  • Conversion copywriting +£300
  • Extra section / variants +£95
  • GDPR cookie banner setup +£95
  • Extra tracking (events) +£180
Request Add-ons
Corporate Website (5–10 pages) — professional presence for services Ideal for companies/brands that want strong positioning, proper structure, and SEO-ready pages.
What’s Included
Deliverables
Ready to generate leads.
  • Contact forms + email routing
  • Basic analytics setup (GA4 placement) + Search Console readiness
  • Security baseline (updates, hardening basics)
  • 1 training session (handover)
Book Kickoff
Delivery Time
3 weeks
Depends on materials, feedback, and page count.
  • Kickoff + sitemap
  • Design direction + build
  • QA + speed pass
  • Go-live checklist
Get Started
Premium Website (10–20 pages) — custom design system & advanced UX For brands that want premium aesthetics, high performance, custom sections, and a conversion-first experience.
What’s Included
Process
Clear stages, quality control.
  • Discovery workshop + sitemap/IA
  • Wireframes (where needed) + design
  • Build + QA + device testing
  • Handover + documentation
Book Workshop
Typical Add-ons
By scope
For heavier requirements.
  • Multilingual (WPML/Polylang) setup +£360
  • Booking / forms logic +£300
  • Custom animations/motion +£360
  • Advanced tracking/events +£300
Request Add-ons
E-Shop (WooCommerce) — sales, products, payments For brands that need a proper checkout, speed, and the ability to scale with marketing & analytics.
What’s Included
Commerce
Built to be usable and to sell.
  • Essential emails/notifications (order flows)
  • Taxes/VAT rules (basic configuration)
  • Security + backups baseline
  • Training for products/orders
Book Kickoff
Integrations / Add-ons
By scope
ERP, feeds, subscriptions, custom logic.
  • Product feeds (Google/Merchant) +£300
  • ERP / inventory integration (by quote)
  • Subscriptions / memberships (by scope)
  • Advanced filters & search (by scope)
Request Add-ons
Maintenance — updates, security, small changes For stability: updates, backups, monitoring, and small interventions within an agreed scope.
Basic
£95 / month
Essential maintenance.
  • Core/plugins updates (monthly)
  • Backups (weekly)
  • Uptime monitoring (basic)
  • 1 small change/month
Buy Service
Pro
£300 / month
For business-critical websites.
  • Weekly health report + priority support
  • Backups (daily) + restore testing (monthly)
  • Security hardening (light) + monitoring
  • Up to 6 small changes/month
Buy Service

CONTACT US TODAY

Website Development by KOSADEL: UX, Speed, SEO-Ready Structure & Conversion Focus

Your website is not “an online brochure”. It’s the central asset that receives traffic, explains your value, answers objections, builds trust, and drives action (form submission, call, purchase). If the user gets confused, if the page is slow, or if they can’t understand why you, the conversion disappears. And that cost is real—whether you pay for traffic or not.

At KOSADEL we build websites with business logic: design that supports the brand, structure that helps SEO and performance, and an experience that nudges conversion. Website development is most effective when it works as part of an overall Digital Marketing plan. Your site must “plug into” acquisition, measurement, and retention—otherwise it becomes a bottleneck.

What a “high-performing website” really means

A high-performing site isn’t judged only by aesthetics. It’s judged by how quickly a user understands: what you do, who it’s for, what outcome you deliver, why they should trust you, and what the next step is. That requires a combination of UX, copy structure, performance, and proper tracking.

The core outcomes we build into the website

  • Clarity: a clear value proposition and a simple path to services/products.
  • Trust: credibility elements, social proof, and structure that reduces objections.
  • Speed: fast mobile loading (that’s where most conversion is lost).
  • SEO-ready: strong architecture, headings, internal linking, and technical foundation.
  • Conversion: CTAs, landing logic, UX patterns, and measurable outcomes.

How website development connects to other services

A website performs best when supported by: Branding & Creative (identity & tone), SEO (organic demand), Search Engine Marketing (immediate demand), Social Media Marketing (demand + community), Analytics & CRO (optimisation), and Reputation Management (trust).

UX that reduces friction and increases conversion

UX doesn’t mean “it looks pretty”. It means it’s easy for the user to understand what you offer and to take the next step without doubts. In services, UX builds trust. In e-commerce, UX speeds up decisions and reduces abandonment.

The patterns we use for a high-performing experience

  • Information hierarchy: the most important comes first, then the rest.
  • Scannable layout: headings, bullets, short sections, clean structure.
  • Trust blocks: proof, process, credibility—no “empty promises”.
  • CTA logic: a CTA per stage (learn, view services, contact, request quote).
  • Mobile-first: designing for mobile first, not “shrinking” desktop.

Page architecture that also helps SEO

Your site structure (navigation, categories, services, landing pages) determines whether Google and the user “understand” the content quickly. For an SEO-ready foundation, the site needs clear hierarchy and correct internal linking. This ties directly to Search Engine Optimisation .

Example structure for an agency / services business

Brand consistency: design as a “trust signal”

When a brand is inconsistent (colours, tone, photography, layout), users hesitate. The website needs to feel “serious” before anyone reads a single line. That’s built through Branding & Creative and delivered across formats (image/video) with Video Production / Motion .

Speed: performance is a conversion lever

Mobile delays kill conversions. Especially with paid traffic, you pay for clicks and then lose users because the site is slow. Optimisation isn’t a “technical luxury”. It’s revenue protection. That’s why we design and build for fast loading, the right image/video strategy, and a clean DOM.

What a performance-first build includes

  • Mobile-first rendering: correct prioritisation above the fold.
  • Images/video done right: compression, lazy loading, modern formats where possible.
  • Clean CSS/JS: less weight, more stability.
  • Proper caching: returning users load instantly.
  • Core Web Vitals mindset: aligned with experience and SEO.

SEO technical foundation: without it, SEO becomes harder

A solid technical base means: clean heading structure, correct internal linking, canonicals/redirects where needed, strong URL structure, and a “clean” architecture that helps Google crawl and index efficiently. The strategy is implemented together with SEO and Content Marketing when you’re building hubs/articles.

Security and stability: the site must hold up

Even the best design has no value if the site goes down, gets hacked, or can’t be maintained. We build with practices that reduce risk and improve stability: updates, access restrictions, clean configuration, and a structure that doesn’t “break” with every content update.

Practical elements that protect the investment

  • Clean content management: so your team can update without breaking layouts.
  • Stable templates: for service pages, landing pages, and blog content.
  • Change control: new sections remain consistent with the design system.
  • Measurement compatibility: tags and tracking don’t “break”.

For e-commerce: a website that supports profitability

In e-commerce, the site must support products, categories, filters, checkout experience, and mobile performance. Strategy here connects directly to E-Commerce Marketing , because the goal isn’t only revenue, but net outcome (margin, returns, CAC vs LTV).

Without measurement, the website won’t improve

A website needs data: what works, what doesn’t, where users drop off, which page drives leads, and which is “dead weight”. That’s why we design the site to support correct tracking and reporting. This logic ties into Analytics & CRO .

Metrics with real business value

  • Conversion rate per landing: which page produces outcomes.
  • Scroll / engagement: whether users reach critical sections.
  • Drop-off points: where users abandon (form, checkout, service page).
  • Lead quality: not only volume, but the “right” lead.

CRO: small changes, big impact

CRO isn’t “changing a button”. It’s optimisation based on data: message, hierarchy, proof, CTA, forms, speed, and a clear next step. With paid traffic, CRO increases ROI without increasing spend. With SEO, CRO turns organic visits into leads/sales.

CRO improvements that often deliver results

  • Hero section refinement: clearer promise + CTA + proof.
  • Service page structure: problem → solution → process → proof → CTA.
  • Campaign landing pages: 1 goal, 1 message, 1 CTA.
  • Trust elements: reviews, certifications, process, “what to expect”.

Integrations: CRM, email flows, and funnel consistency

The site must “talk” to your business tools: CRM, email marketing, analytics, e-commerce tracking. When these are set up correctly, the funnel becomes predictable. For nurture and automations, the website connects naturally with Email Marketing & CRM .

Traffic without the right website = wasted investment

If you’re driving traffic via Search Engine Marketing , Social Media Marketing or brand campaigns (e.g. Media Buying 360 ), your website must be conversion-ready. Otherwise, marketing works—but the website fails to close the sale.

Frequently Asked Questions

Both—but in the right order: clarity/UX and performance first, then aesthetic “detail”. Design must serve conversion and brand trust. Measurement and improvement are driven via Analytics & CRO .

Usually, yes. Each campaign needs a page with 1 goal, 1 message, and a clear CTA. That improves conversion and lowers CPL/CPA for SEM and paid social.

With the right architecture, headings, internal linking, speed, and technical foundation. If these are missing, SEO becomes harder. See also Search Engine Optimisation .

Stronger messaging, clearer CTAs, proof blocks, faster mobile performance, campaign landing pages, and correct tracking. This process is executed with Analytics & CRO and strategy via Marketing Strategy & Consulting .

Mobile performance, checkout friction, correct product/category structure, and profitability tracking. This connects with E-Commerce Marketing and retention via Email Marketing & CRM .

Next step

If you want a website that truly performs, the priorities are: structure, performance, trust, and conversion. For an end-to-end plan, see: Digital Marketing , Search Engine Marketing , SEO , Analytics & CRO .