Live uptime for cbwatch.co.uk, checked automatically roughly every 10 minutes. A company selling monitoring should be transparent about its own — see below.
Each check is a plain, unauthenticated request against the app itself — the same kind of external check CBWatch's own scanner runs against a customer's site. A single missed check can be a transient blip on the checker's side rather than real downtime; the banner above only flips to "degraded" or "down" after several checks in a row fail.