I am not writing about your ISP choice, but because i noticed you posted your full postcide.

Wouldn't recommend putting a full postcode, simply because it is a security risk. A complete stranger who knows how to do it -- apart from posties -- now has the wherewithall to walk straight up to your front door, which is not I am sure not what you want or intended. It is possible to be quite specific about broadband connection simply by mentioning the area or town.