For UK numbers I can also recommend these guys: https://www.aa.net.uk/telecoms.html https://www.aa.net.uk/telecoms.html Their technical support is actual tech

For UK numbers I can also recommend these guys: https://www.aa.net.uk/telecoms.html https://www.aa.net.uk/telecoms.html Their technical support is actual tech support, with tech guys that won't take any bullshit, especially if you have 2FA (TOTP-based) on your account. The numbers are not recognised as VoIP and will work with every single service (I have yet to find one that will fail). I believe they are partnered with a local carrier that does some magic (call forwarding to some internal number?) so from the outside they look just like any other mobile number from that carrier. (no affiliation besides being a satisfied customer for years)