718 Website Development Leads in London

718 of the 6,000 businesses in London we have checked have no website of their own — 12%. Every business in this slice has been checked in both directions.

Business names, categories, ratings and review counts come from public Google Maps listings, observed by Mantis — most recently on 31 August 2026. The website gap rates, area rankings, Lead Scores and coverage figures are our own calculations from that data and are published nowhere else. We do not resell Google's data; we publish what we measured on top of it.

It is a 0–100 score combining rating, review volume, business category and how complete the listing is — the same function the Mantis app uses, so a score here never disagrees with one inside the product. It is deterministic: the same business scores the same every time. The full method is on our methodology page.

It is the complete set we have verified. 329 of the 329 map cells covering London have been searched to exhaustion, most recently on 31 August 2026, which is why we can state a rate rather than just a count. Coverage deepens over time and these figures are recalculated daily.

Every statistic on this page, plus each business's name, category, area, rating, review count, Lead Score and the date we last checked it, is free and needs no account. Phone numbers, email addresses and exact street addresses are not published here — those are what a free Website Development account unlocks, along with saving leads and exporting them.

Statistics are recalculated daily. The listed businesses are re-sorted on a fifteen-day cycle so the page is not a single frozen snapshot. We deliberately do not stamp today's date on a page that has not changed — the "figures last changed" date below moves only when the underlying numbers actually move.