British Gas
This number is listed by British Gas on its own website (Services and HomeCover enquiries (24 hours)).
Source: “Call us Services and HomeCover enquiries 0333 200 8899” (opens in a new tab). Checked 13 October 2026.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call British Gas back on a number you've found yourself, such as the one on their own website or on a letter or bill from them.