How to Choose a Website Design Agency for Aesthetic Clinics
By Surinder Ahitan · 8 min read 
I’ve reviewed a lot of website proposals on behalf of clinic owners over the last two years. Most of them arrive from agencies who have built sites for accountants, solicitors, gyms, and maybe one beauty salon. The proposal always looks polished. Screenshots of clean homepages. The words “responsive”, “SEO-friendly”, and “conversion-optimised” appear several times.
What they rarely show you is a tracked booking. A form submission. A phone call that came from the website rather than a walk-in. The thing clinic owners actually need.
Choosing the wrong agency costs you twice: once to pay for the site you get, and again to pay someone else to fix it or replace it. The first payment is usually somewhere between three and eight thousand pounds. The second is anything upwards of that. Most clinic owners I speak to who are on their second website made the same mistake the first time: they hired for design, not for outcome.
Why the stakes are higher for aesthetic clinics
Your website is doing more than looking professional. It is doing a job: capturing the name and number of someone who wants a treatment, moving them from curiosity to a booked consultation, and doing it at three in the morning when you and your receptionist are asleep.
A website that does that job well is a system. A website that does not is a brochure. A brochure is fine if someone is already convinced — a family member recommended the clinic, they have already decided, they just want to find the booking form. It is useless for everyone else.
The majority of clinic sites I look at are brochures. They were built by agencies who are good at making things look nice and who have no model for what a clinic website is actually supposed to achieve. The result is a site that gets compliments from people who already know the clinic, and books nothing from the people who land on it cold.
What to look for when choosing an agency
1. Evidence of clinic-specific results, not just clinic-sector clients
Any agency can say they have worked in healthcare. Ask to see the actual outcomes: did bookings from the website increase after they built it? Can they show you traffic data over twelve months from a clinic they have worked with — not a screenshot of a design, but real analytics?
Most agencies cannot answer this because they do not track it. Their work ends when the site goes live. An agency that understands clinic marketing does not consider go-live the end. It considers it the start.
If they cannot show you data — even basic data like enquiry form submissions or click-to-call rates — that is your answer.
2. Ask specifically about the Advertising Standards Authority
Any agency building a website for an aesthetic clinic needs to understand that certain content is not just “a bit risky” but actively regulated. Before-and-after images used in advertising, testimonials for prescription-only treatments, pricing structures for injectables — these have specific rules under the CAP Code and the ASA’s enforcement position for cosmetic procedures.
A good agency will raise this without being prompted. They will tell you what they cannot put on the site and why, and they will have a process for making sure the content passes a compliance check before it goes live.
If the agency has no idea what the CAP Code is, or tells you they “check the legal stuff with their copywriter”, do not hire them to build an aesthetic clinic site. They are telling you they have never had to think about this before.
3. Find out who actually writes the content
This one question eliminates about half the agencies you will speak to.
Web design agencies generally do two things well: design and code. Writing content about lip filler, skin boosters, or laser resurfacing — in a way that is medically accurate, commercially compelling, and compliant with advertising rules — is a third discipline entirely. Most agencies outsource this to a junior copywriter who will spend one afternoon with your treatment menu and deliver three hundred words per page about “natural-looking results” and “bespoke tailored treatments”.
You need content that converts a sceptical patient comparing you against three other clinics within two miles of her home. That requires someone who understands the patient decision journey, not just how to produce a word count.
Ask who writes the content. Ask to read a sample page they have produced for a comparable clinic. Read it as if you were a patient seeing it for the first time and deciding whether to book.
4. Check the actual performance of sites they have built
Before you commit, find one of the live sites they have built for a clinic and run it through Google PageSpeed Insights — it is free and takes two minutes. You want to see a score above eighty on mobile and above ninety on desktop. Below that and the site is loading slowly enough to cost rankings and patience from visitors simultaneously.
Also: search for the clinic’s main treatments in the town where they are based. Not the clinic’s own name — anyone can rank for their own name. Search “lip filler [town]” or “Botox clinic [town]”, the way a new patient would. Is the site the agency built anywhere on the first page of results?
If the sites they build are slow and invisible, the portfolio screenshots do not mean much.
5. Understand what happens after the site goes live
A clinic website is not a one-time project. Treatments change. Regulations change. Google’s requirements change. Copy that worked in 2022 may be using terminology the ASA has since flagged. New services need pages. Existing pages need refreshing to stay competitive in local search.
Ask the agency what post-launch support looks like. Is it a monthly retainer? Per hour? Is there a single point of contact who knows your site, or does every request go to a helpdesk that has never seen your business before?
The agencies that cost the most in the long run are those who build and disappear. You end up with a site you cannot edit yourself and an agency that takes two weeks to respond to a change request.
6. Ask them to explain your analytics back to you
A site that does not track its own performance is a site you cannot improve. Before committing to an agency, ask them to walk you through how they would set up and report on the things that matter: how many people visited the treatment page, how many clicked the booking button, how many filled in the enquiry form, and which source sent them there.
If they go blank, or tell you Google Analytics is “set up automatically” and they will send you a login, they are not running conversion-led work. They are building websites.
An agency worth hiring can explain, in plain English, how you will know whether the website is working.
What to do this week
If you are currently looking for a website agency — or wondering whether the one who built your existing site was right for a clinic — here is where to start:
- Run your current site through Google PageSpeed Insights. Free, two minutes. A mobile score below seventy is a significant ranking penalty, and it is something any competent agency should have prevented.
- Ask your current or prospective agency to show you enquiry data from another aesthetic clinic site they manage. Not rankings. Bookings or form completions. See whether they can answer the question.
- Search for your main treatment in your town. Not your clinic name. A treatment keyword, the way a new patient would type it. If you are not on page one, that tells you whether the site is doing the R1 job — getting found.
- Ask any prospective agency what they would change about the site you have now. A good agency will tell you in the first conversation. An agency that says everything looks fine is not paying attention.
The website is not a background detail. It is the thing that converts every enquiry you generate through SEO, through word of mouth, through a sign on the door. When it does not work, everything else works less. When it does work, it works around the clock — which is what the S in S.E.L.F is built around: securing every enquiry, not just the ones that arrive during business hours.
Surinder Ahitan grew the CoLaz aesthetic clinic group from one to nine UK locations in six years, mainly through Google rankings and well-built websites. If you want an independent view of whether your clinic’s website is costing you bookings — the free audit takes 15 seconds and lands in your inbox within minutes.