Ofcom's broadband map
Ofcom have produced a map of Broadband availability. The link is the link to it. The real problem, however, is that it does not indicate what someone should expect in some of the really large counties such as Powys.
Broadband will vary across such counties so it is more of a management tool than a tool which really explains what someone should expect if they move to somewhere in such a county.
It is, however, something I find vaguely interesting so I thought I would repost it.