Where in UK is area code plus 44790?

Any UK telephone number beginning with 070, or in international format +44 70, is a personal "follow-me" number that can be forwarded to almost anywhere in the world.

Although there are many legitimate users of these numbers, they are also very popular with e-mail scammers. If a Nigerian prince or the widow of a general is offering you a percentage of their vast wealth, yes, it really is too good to be true.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)