I should have checked the blog
It is explained that although Twinity is breaking even there is less finance available so the map data is discontinued for a while. It may come back.
Surely some cities actually welcome the interest generated by Twinity and have some rights to local info? I may try London, could be an election issue. Ken is a bit of a techie in a quiet sort of way.
But now I know what is going on it is ok to work with. A home in Exeter is no harder to find than anywhere else.
Maybe some other source of data would be possible and could be cheaper if linked to other product. I wanted a beach location in the South West of England and the nearest available is in Northampton.