Cheltenham's digital-first web design and development agency
16i is a B Corp-certified web agency based in Cheltenham, Gloucestershire. We combine design-led thinking with experienced software development to build websites and digital products that solve real problems — for organisations that want to do things properly.
What we do
We're a full-service web design and development agency in Cheltenham. That means one team handling strategy, design, build and ongoing support; no handoffs, no dropped context.
Why work with a Cheltenham web agency?
There's no shortage of web agencies in the UK. What's rarer is one that combines technical depth, design craft, and genuine local accountability — the kind that comes from being based in the same place as the clients we serve.
We're in Cheltenham. So are your stakeholders.
Our studio is on Rockfield Business Park in Cheltenham. We meet clients in person, run discovery workshops on-site, and are easy to reach when it matters. For Gloucestershire businesses who've been burned by remote agencies going quiet mid-project, that proximity means a lot.
Digital-first, not template-first
We don't start with a theme and fill in the blanks. Every project begins with understanding your users, your goals, and your constraints — then we build something that fits, rather than something that sort of works.
B Corp certified
We're one of a small number of digital agencies in Cheltenham and Gloucestershire to hold B Corp certification. That means we're independently verified for our standards on people, planet, and governance — not just our portfolio.
Who we work with
Our clients range from Cheltenham-based organisations to national charities, arts institutions and international businesses. They share one thing: a need for digital solutions that go beyond what an off-the-shelf platform can offer.
How we work
We run a structured, collaborative process — transparent enough that you always know what's happening, flexible enough to adapt when things change.
1. Discovery
Understanding your goals, users and technical constraints before a line of code is written.
2. Strategy & UX
Information architecture, user journeys and prototyping to validate the approach early.
3. Design
Brand-aligned, responsive visual design that works on every device.
4. Build
Front and back-end development against a clear specification, with regular review points.
5. Launch & support
Thorough pre-launch QA, SEO handover documentation, and ongoing support options.
Frequently asked questions
What does a web agency in Cheltenham cost?
Project costs vary significantly depending on scope. A focused brochure website typically starts from £8,000–15,000; larger Umbraco builds, bespoke applications or complex integrations are quoted individually. We provide a detailed proposal after an initial discovery conversation — no ballpark guesses up front.
Do you only work with Cheltenham businesses?
No — roughly half our clients are based outside Gloucestershire, including organisations in London, Oxford, and internationally. We’re Cheltenham-based but work nationally. For local clients, we value in-person working and our studio is available for workshops and reviews.
Which CMS do you build on?
We’re a certified Umbraco agency and it’s our CMS of choice for most projects — it’s flexible, developer-friendly, and SEO-capable without requiring additional plugins. We also build headless and custom back-end solutions where the project demands it.
How long does a website project take?
A typical website project runs 10–16 weeks from kick-off to launch, depending on scope and how quickly content and feedback are provided. Bespoke software projects are scoped individually. We agree clear milestones at the outset and stick to them.
Are you a full-service digital agency?
Yes, within the digital product space. We cover strategy, UX, design, web development, bespoke software, CMS, SEO and ongoing support — all under one roof. We don’t offer paid social or traditional advertising, and we’re honest about that boundary from the start.
Ready to talk?
If you're looking for a web design and development agency in Cheltenham — or anywhere in the UK — we'd like to hear about your project. An initial conversation is free, no-obligation, and usually the most useful 45 minutes you'll spend this month.