Google and Gmail often ask for a phone number for account verification and two-factor authentication (2FA). A real UK +44 number is accepted. BuyUKeSim provides UK eSIM numbers: real mobile lines, not VoIP, so you can receive Google SMS codes and use 2FA without problems. Pay with crypto, get the QR code, install the eSIM, then add the number to your Google account.
For "UK number Google verification" or "Gmail UK number", a real UK eSIM from BuyUKeSim is a reliable choice - no KYC, instant delivery.