WEBSITE DESIGN & DEVELOPMENT
Cortec IT has designed and developed websites and implemented SEO best practices for businesses across Dartford, Kent, London and the UK since 2003. We build websites on WordPress, hand-code fast custom HTML & CSS sites, and design or redesign sites on platforms such as Shopify, Wix and Squarespace. Using AI-assisted design and development tools, we build faster, test more thoroughly and keep costs down. Explore our portfolio below or contact us to book a free consultation.
Beautiful Custom Designs
Responsive Websites
Custom Web Applications
Digital Marketing (SEO & PPC)
Why Work With Us
- ✓Established in 2003Dartford-based IT and web specialists
- ★Rated 5.0★ on GoogleTrusted by businesses across Kent
- ✓In-house teamDesign, development and SEO under one roof
- ✓Free consultationIn person at our office or by video call
Website Design & Development in Kent
Cortec IT is well known for IT support in Kent, London and the South East, and we have designed and built websites for Kent businesses since 2003. Whether you are launching your first website, starting a new business or replacing a tired, outdated site, we tailor the solution to help you reach and re-engage your audience.
Every website we build is fully responsive, adapting its layout to phones, tablets and desktops, and is built with SEO in mind from the start.

Why Kent Businesses Choose Cortec IT
Based in Dartford, Cortec IT Solutions designs and builds fast, secure websites for businesses across the region. With more than 1,100 websites designed and developed, we combine technical skill with a clear growth strategy.
In-House Team, Full Accountability
We don't outsource. Our in-house designers, developers and SEO consultants handle every page and every line of code, so you always know who is responsible for your project and your data stays secure.
AI-Assisted Design & Development
We combine hands-on experience with the latest AI tools to speed up design, write cleaner code and test every page across devices. Our own developers review and approve everything before it goes live.
Specialist Sector Experience
We build websites around the needs of specific industries:
- Healthcare & legal: privacy-conscious sites that build professional trust
- Construction & engineering: robust sites for industrial and heavy equipment firms
- Retail & services: high-converting sites for fashion, architecture and luxury property
Secure UK Hosting
We host websites on secure, UK-based servers, optimised for speed and set up to support compliance with UK data protection rules, giving you peace of mind when handling client information.
Ongoing Maintenance & Support
Our support continues after launch. We keep your website updated, secure and in step with changes in search and AI technology, so it keeps performing for your business.
Ready to Start Your Project?
Book a free consultation and we'll talk through what your business needs from its website.
Book a Free Consultation
Website Design & Development in Dartford
Based in Dartford, Cortec IT has provided web design and development since 2003, alongside our IT support in Dartford and managed IT services.
Just 19 miles from central London, with easy access to the Kent countryside, Dartford is home to a growing number of businesses. We build websites for clients across Kent, London and the wider UK.
Get a Quick QuoteWebsites Built to Grow Your Business
Websites for Kent Businesses
Our in-house team handles everything from new builds and redesigns to fixing technical problems on existing sites. We work with WordPress, custom HTML & CSS, Shopify, Wix and Squarespace, choosing the right platform for your goals.
Our SEO-first approach means your website looks good, ranks well and turns visitors into customers, backed by our SEO services in Kent.
Websites for Dartford Businesses
A well-built website is the foundation of your online credibility and search visibility. Every project we deliver in Dartford and across Kent is built on four core principles:
- Mobile-first, responsive design
- SEO-ready site structure
- Bespoke technical customisation
- Fast, secure hosting and ongoing support
Website Design & Development in Kent FAQs
Why choose Cortec IT for website development in Kent?
Since 2003, we have combined thoughtful design with in-depth IT expertise. Unlike basic design agencies, we build SEO-first websites that are secure, fast and integrated with your wider business systems, and we have delivered more than 1,100 websites for businesses across Dartford and the South East.
Will my new website be fully responsive?
Yes. Your website will work smoothly on every device, from smartphones and tablets to large high-resolution screens. We design mobile-first and build to meet Google’s Core Web Vitals standards, so your site is fast and stable as well as responsive, which helps it rank well in Kent and beyond.
Which website platforms do you build on?
We choose the platform that best suits your business. We build on WordPress, hand-code lightweight custom HTML & CSS sites for maximum speed, and design or redesign websites on Shopify, Wix and Squarespace. Whichever platform you use, we make sure it is secure, easy to manage and optimised for search.
Can you take over or fix an unfinished or outdated website?
Yes. We often help businesses in Dartford and Kent that have been let down by other developers. We can carry out a full technical audit of your existing site, fix security issues and finish the development so it meets our performance standards.
Can you include digital marketing and SEO in the development process?
Yes, and we believe it is essential. A great website is of little use if people cannot find it. As we also provide SEO services in Kent, we build search engine optimisation into your site from day one, giving your digital marketing the strongest possible foundation.
Do I have to sign a long-term contract for my website development?
No. Transparency is one of our core values, and we do not lock clients into restrictive long-term contracts. We earn your loyalty through the quality of our work and the results we deliver for your business.
Website Design & Development Portfolio
We have designed and developed websites for businesses across many industries. Take a look at some of the websites we have built:
Areas We Cover for Website Design & Development
Based in Dartford, we design and develop websites for businesses across Kent, London and the South East.
Dartford & Surrounding13 areas
Rest of Kent13 areas
Essex5 areas
Sussex1 area
London22 areas
Website Platforms & Tools
We build on proven platforms, hand-code lightweight HTML & CSS sites for speed, and use AI-assisted development to deliver faster, thoroughly tested and SEO-ready websites.
Let's Talk About Your Website
Thank you for considering Cortec IT for your next website project. Call us, send us a message or fill in the form below to get a quote.
If you are in Dartford or elsewhere in Kent, you are welcome to book an appointment and visit our office. If you are further away, book a free video consultation and our team will answer your questions.
Follow us on LinkedIn for our latest news and offers, and explore our SEO services to get the most from your new website.
Get a Quote
Lead Web Developer
Nick Harries
Find Us in Dartford
Our team is based just outside Dartford. Book an appointment to meet us in person and talk through your website project.
- ⌂AddressCortec IT Solutions Ltd
Unit 17, Bybow Farm, Orchard Way
Wilmington, Dartford, Kent DA2 7ER - ✆Phone020 8467 9222
Let's Build Your New Website
Cortec IT offers a full range of web services to help your business grow online:
Book a call to discuss how we can help grow your business and online presence.
Request Your Free Quote
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