Every designer you meet will tell you to build mobile-first. It is baked into the tools, the tutorials and the way Google talks. For a consumer brand that advice is right. For a B2B or professional service firm, it might be quietly costing you enquiries. We run the analytics for a good number of B2B firms in Chester, so we did the boring thing and looked at which screen their buyers actually use. For the accountants, solicitors, wealth managers and manufacturers on our books, the answer is a desktop, at work, during the week. Not a phone on the sofa. Every figure below is from B2B and professional service accounts. If you sell to consumers, the opposite is likely true, and we say so.
Key takeaways
- Across five B2B and professional service accounts we run, 86% of website visits last year came from a desktop, not a phone. Nationally the split is near even, and mobile-majority once you filter out bots. These B2B accounts are the opposite of that.
- It is not just idle traffic. Roughly 79% of all enquiries and sales across those accounts came from a desktop too.
- The traffic peaks Monday to Friday, in working hours. Your buyers are researching you from a desk, on the clock.
- This does not mean neglect mobile. It means stop treating the desktop view as an afterthought when it is where your buyers and your money are. We call the fix the Desk Test.
We looked at five B2B accounts. Desktop won, everywhere
We pulled Google Analytics for our own site and four client accounts we manage, all B2B or professional service businesses, covering the twelve months to 6 July 2026. We split every session by device: desktop, mobile or tablet. No modelling, no estimates. Just what the browser reported.
Across those five accounts, desktop accounted for 86.5% of all sessions. Mobile managed 13%. Tablet and the rest made up the scraps. That is our last 100,000-plus website sessions, and the pattern held on every single account:
| Measure | Desktop share |
|---|---|
| Visits | 86% |
| Enquiries | 79% |
Now hold that against the national numbers. StatCounter puts the UK at roughly half and half, near 50% desktop to 46% mobile on page views. Filter the bots out and the human-only estimates tip mobile-majority, around 56%. Whichever number you trust, the country sits near even or slightly mobile. These accounts are at 86% desktop. It is not close.
The traffic is not the interesting part. The enquiries are
A fair objection at this point: desktop traffic can be inflated by bots, and UK bot traffic skews heavily desktop. True. So we ignored the sessions argument and looked at the thing that pays wages. Enquiries. Form fills, quote requests, calls booked, purchases. The key events.
Same story, and cleaner. Across those accounts, roughly 79% of all enquiries came from a desktop. A bot does not fill in a contact form and ask for a quote. A buyer at a desk does. When the accountancy firm booked enquiries, more than three quarters came from desktop. When the manufacturer took orders, nearly four in five were desktop. The screen that brings the visits is the same screen that brings the money.
There is a nuance worth being honest about, and it cuts against a lazy version of this argument. Per visit, mobile often converts about as well as desktop, sometimes better. Mobile is not worthless. It is just a smaller slice, arriving less often. Which is exactly why breaking your mobile experience to chase a mobile-first ideal is the wrong trade. You would be optimising hard for the minority and leaving the majority on a layout you designed second.
Mobile-first is a rule for retail and media. For professional services, it is a design brief for the wrong screen.
Why your buyers are at a desk
The reason is not mysterious. Look at when the traffic arrives.
On the accountancy account, the single busiest hour is 10am, and the working day fills most of the busiest slots. On the manufacturer’s site, weekdays pull nearly double the traffic of weekends. Wednesday is the busiest day of the week. Saturday and Sunday are the quietest.
Put those together and the picture is obvious. Someone needs an accountant, a solicitor, a wealth manager or a technical supplier. It is a considered decision, often a work decision, and they make it during the working day on the machine in front of them. That is usually a desktop or a laptop at a desk. They are comparing three firms in browser tabs, not thumbing through your site while queuing for a coffee.
Retail and lifestyle brands are the opposite, and rightly build mobile-first. Someone browsing trainers, booking a class or ordering a takeaway is on their phone on the sofa. Both things are true at once. The mistake is applying the retail rulebook to a professional firm and never checking whether it fits.
The Desk Test
Here is the model we now use with clients, and you can run it this week. We call it the Desk Test.
Before you sign off any website design, you look at it on the screen your actual buyers use, in the setting they use it. For most professional firms that means a desktop monitor, full width, at a work desk, in daylight. Not just your phone on the train home. If the desktop version of your homepage looks like an afterthought stretched to fill the space, you have designed the wrong site.
The test has two parts:
- Pull your own device split. In GA4, go to Tech, then Device category. Look at sessions and at your key events. If desktop dominates both, you are a desktop-first business whatever the tutorials say.
- Judge the design where the money is. Approve the desktop layout on a desktop. Make sure the things that win the enquiry, the credibility, the proof, the clear next step, are strong on the big screen first.
That is not permission to ship a broken phone experience. It is a reminder to stop letting a slogan decide your priorities.
The honest counter-argument
The mobile-first crowd would make three fair points. First, mobile share is rising every year, so even a desktop-heavy business is drifting toward the phone over time. Second, Google indexes the mobile version of your site, so a weak mobile page can quietly hurt your rankings even if few humans use it. Third, a slow or clumsy mobile site turns away the mobile visitors who do arrive, and some of those were ready to buy.
All three are true, and we act on all three. We build responsive sites that work properly on a phone, we watch mobile performance and Core Web Vitals, and we never ship a mobile experience we would not use ourselves. The argument here is not desktop instead of mobile. It is desktop first for the businesses whose buyers are on desktop, because priorities are finite and you should spend them where the enquiries are. A site can be excellent on a phone and still be designed, reviewed and optimised for the desk where the decision actually gets made.
This ties back to something we wrote recently about AI search traffic in Chester: the industry loves a scary trend, and the honest move is usually to check your own numbers before you rebuild anything. Device split is the same lesson. Your analytics already know the answer. Most owners have never looked.
What we would actually do on Monday
If you run a professional or B2B firm in Chester or the wider North West, here is the version we would follow.
- Open GA4 and read your device split for the last twelve months, sessions and enquiries both. Write the desktop share down. Now you have a fact instead of a slogan.
- If desktop dominates, make the desktop layout your primary web design canvas, and review every new page on a real monitor before it ships.
- Keep the mobile version clean, fast and honest. Not neglected, just not the boss of the project.
- Point your ad spend and landing pages at the same reality. If your buyers convert on desktop in working hours, that is when and where your budget should be working hardest.
- Re-check every quarter. If your mobile share climbs past a third, your audience is shifting and your priorities should shift with it.
That is it. No rebuild for the sake of it, no fashion. The businesses that win online are not the ones following the loudest rule. They are the ones who looked at their own data and designed for the customer they actually have. If you want a hand reading your numbers, or a website built for the screen your buyers use, that is exactly the kind of work we do, and we put a results guarantee behind it.
We would rather tell you the boring truth and build you something that earns its keep than hand you a trendy phone-shaped site that looks great in a portfolio and quietly loses the enquiry. Check the screen. The data is already there.
Sources and method
First-party figures are from Spectra Media’s Google Analytics 4, using the deviceCategory dimension over 7 July 2025 to 6 July 2026, across our own site and four client accounts we manage, all B2B or professional service businesses in accountancy, law, wealth management and manufacturing. This is a B2B sample by design; consumer and retail sites skew the other way. Aggregate across the five accounts: 110,546 sessions (desktop 95,661 = 86.5%, mobile 14,507 = 13.1%, tablet and other 378) and 3,953 key events (desktop 3,120 = 78.9%, mobile 818 = 20.7%, tablet 15). All client figures are anonymised and reported only as aggregates or percentages. Hour-of-day and day-of-week patterns are from the same accounts. Small accounts carry normal analytics caveats (self-reported device, bots, consent-mode gaps); we lead with key events precisely because they are far harder for bots to fake than raw sessions.
Supporting external data: StatCounter, Desktop vs Mobile vs Tablet UK (roughly 50% desktop, 46% mobile, 4% tablet on page views, May 2025 to May 2026); Technology Checker, Mobile vs Desktop UK (bot-filtered human traffic around 56% mobile); Digital Silk, Mobile vs Desktop Traffic Share 2026.
