Halifax
This number is listed by Halifax on its own website (Online Banking helpdesk).
Source: “For help with your Online Banking, call us on 0345 602 0000” (opens in a new tab). Checked 14 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 Halifax back on the number on the back of your card, or call 159, which connects you to your bank.