How to choose a web design agency UK owners can trust

If you want to know how to choose a web design agency UK owners can rely on, start here: most people compare portfolios and prices, then find out too late who owns the code, who built it and who picks up the phone after launch. This guide gives you the questions to ask on the first call, a brief to send to every agency and a scoring sheet to compare three of them fairly.

The market is crowded. Logic Design puts the number of website design agencies in the UK at over 2,000 (Logic Design). You need a method, not a longer shortlist.

What to ask on the first call

Keep the first call to 30 minutes and ask the same questions of every agency. You are not testing how well they sell. You are testing how clearly they answer.

The four areas that matter most are who builds the site, who owns the code and domain, how it is tested on phones, and what happens after launch. Each gets its own section below.

Write the answers down during the call. By the third agency you will have forgotten who said what, and the scoring sheet later in this article depends on notes you took at the time.

One more thing to settle early: what kind of company are you speaking to? Madison Marketing explains that design agencies specialise in how a site looks, web development companies build the code under the hood, and full-service agencies do both (Madison Marketing). None is wrong. But if you need a booking system or a shop, a pure design studio will be passing the hard part to someone else. Which brings us to the next question.

Who builds the site: in-house team or subcontractors

Ask it plainly: "Will your own team build this, or will any of it go to freelancers or another company?"

Subcontracting is not automatically bad. Plenty of good agencies bring in a specialist for a one-off job. The problem is when you only find out afterwards, because then nobody can tell you who to call when something breaks.

Follow-up questions:

• Who is the named person responsible for my project, and will I speak to them directly?
• Who writes the code, and who designs the pages?
• If part of the work is outsourced, which part, and who is accountable for it?
• Can I see two or three live sites your team built, and speak to those clients?

On portfolios, Logic Design flags an agency with no portfolio on its site as a red flag (Logic Design). Go further than looking at screenshots. Open the live sites on your phone and click around. Check they load quickly and the forms work.

Who does what in an agency

Design

Decides how the site looksShapes layout and brand

Development

Builds the code under the hoodConnects content and features

Full-service

Covers both in one team

Who owns the code, domain and content after launch

This is the question owners ask most, and the one agencies answer most vaguely. Get the answer in writing before you pay a deposit.

Use this checklist on the call:

• Domain: is it registered in your name, with you as the registrant? If the agency registers it for you, you should still be able to see and control the account.
• Code: do you own the finished code outright once you have paid, or are you licensed to use it? If it is a licence, ask what happens if you stop paying or leave.
• Content: do you own the copy, photos and video made for the site? What about stock images, fonts and plugins bought on your behalf?
• Logins: will you hold admin access to the CMS, hosting, analytics and the domain account from day one?
• Handover: if you part ways, how do they hand over the files and database, how long does it take and is there a fee?

A clean answer sounds like this: "You own everything we create once the final invoice is paid, the domain is in your name, and you have admin logins from launch." A vague answer sounds like "we look after all that for you." That phrase often means you cannot leave without rebuilding.

Third-party tools are the grey area. A site built on a page-builder platform or a paid theme will carry its own licence terms. That is normal, but you should know which parts you can take with you and which you cannot.

How the site is tested on phones before launch

"We make it responsive" is not an answer. Logic Design lists incompatibility with some browsers and devices, and slow loading, among the problems of picking the wrong agency (Logic Design). Ask how they actually check.

A reasonable test plan covers:

• Real devices, not just a resized browser window. At least one recent iPhone, one Android phone and one older or cheaper handset.
• Both main mobile browsers, Safari on iPhone and Chrome on Android.
• Key journeys, not just the homepage. Fill in the contact form, make a test booking, check out with a test order, tap every menu item.
• Speed on a mobile connection, with a named tool and a target they will hit.
• Basic accessibility, such as readable text size, enough colour contrast, buttons big enough to tap and images with descriptive alt text.
• Sign-off, a written list of what was tested, on what, and what was fixed.

Ask to see a test report from a past project. If they have never written one, that tells you something.

What happens after launch: support, updates and hosting

Launch day is the start of the bills, not the end. Ask what is included and what costs extra.

Question	What a good answer includes
Who hosts the site?	Named provider, who pays, whose account it sits in
What does hosting cost per month or year?	A figure, plus what it covers (backups, security, uptime)
Who applies software and plugin updates?	A named person or team, and how often
What is the support window after launch?	A set period for fixing bugs at no charge
How do I request changes?	A named channel and a typical response time
What does a small change cost?	A day rate or a fixed price list
Can I move to another host or agency?	Yes, with a described handover process

Watch for a monthly care plan that bundles everything with no breakdown. A care plan can be good value, but you should be able to see what you are paying for and cancel it without losing the site. How much it costs depends on the size of the site, the platform and the level of cover, so expect each agency to quote differently.

Write one brief and send it to every agency

Orbital Tech makes the point that an agency quotes against what you write, so a vague brief produces quotes you cannot compare (Orbital Tech). ecorn goes further: choosing an agency starts with normalising scope, not ranking portfolios, and giving every agency the same brief lets you compare delivery rather than interpretation (ecorn).

Your brief can be one page. Include:

1. What the business does and who the site is for.
2. The goal, such as more enquiries, online sales or bookings.
3. Pages and features you know you need, and what you can live without.
4. What exists now: the current site, domain, hosting and any integrations (CRM, payments, email).
5. Content: who writes the copy and supplies photos.
6. Ownership and handover requirements, copied from the checklist above.
7. Testing and support expectations.
8. Timeline and budget range, if you have one. Giving a range saves everyone's time.
9. Your decision date and who signs off.

Send it to three agencies, no more. Answer their questions in writing and share the answers with all three, so nobody gets an advantage.

Three-agency scoring sheet

Score each agency from 0 to 5 on each line straight after the call, then again after you read the proposal. Multiply by the weight and add up. Adjust the weights if something matters more to you, but set them before you speak to anyone.

Criterion	Weight	Agency A	Agency B	Agency C
Named builder, in-house or clearly explained subcontracting	3
You own code, content and domain in writing	3
Admin logins handed over at launch	2
Real-device phone testing with a written report	2
Accessibility and speed checks	1
Clear post-launch support and hosting costs	2
Relevant live work you could open and use	2
Proposal matches your brief, nothing vague or missing	2
References you could actually call	1
Price clear and comparable with the others	1

Do not pick on score alone. If an agency scores 0 on ownership, drop it whatever the total. Use the sheet to settle close calls and to spot which agency answered most clearly.

A note on directories: Madison Marketing says ranked "best agencies" lists are generally affiliate networks where agencies pay to be listed, so they are essentially ads in disguise (Madison Marketing). Use them to find names if you like, then judge the agencies yourself. If you are also weighing up reviews, our guide on how to check agency reviews before you hire covers the same ground for AI work.

Red flags that should end the conversation

• No portfolio, or only mock-ups and no live sites.
• They will not put ownership in writing, or the answer changes between calls.
• The domain or hosting sits in the agency's account only, with no access for you.
• No named person responsible for your project.
• "Responsive" is the whole testing answer.
• A fixed price with no scope, or a scope with no price.
• Hidden costs appear late: plugin licences, hosting, "maintenance" fees nobody mentioned.
• Pressure to sign this week for a discount.
• They quote before asking what the site is for.

Logic Design lists hidden costs, slow loading and brand misalignment among the risks of a poor choice (Logic Design). Most of them show up on the first call if you ask the questions above.

Where to start

1. Write the one-page brief this week.
2. Pick three agencies, using referrals and live sites you have seen, not a paid ranking.
3. Book a 30-minute call with each and ask the same questions.
4. Fill in the scoring sheet straight after each call.
5. Get ownership, testing and support terms in writing before you pay anything.
6. If your project is bigger than a website, read when to build a custom app before you commit.

If you want to see how we approach this, look at our websites, apps and software service and some of our work. We would rather you ask us the same questions as everyone else.

If you would like a second opinion on your brief or a straight plan for your next site, you can get a free AI plan or book a call and we will go through it with you.

Sources

• Logic Design
• Madison Marketing
• Orbital Tech
• ecorn