When a telephone number begins with 0800 in the United Kingdom, it is usually a business and it is not geographically linked to any specific part of the United Kingdom.

In the United Kingdom, telephone numbers beginning with 0845 are considered non-geographic, ie they are not associated with a specific geographic area. As such, the rate charged when calling such a number can vary but is often greater than that when calling a local number.

Somewhere in the United Kingdom

There are between 700-800 million geographic phone numbers listed in the United States.

There is no company in the UK with that name. It's probably a scam.