trigpoint
I spent a lot of time one Summer working in County Durham so got to know it very very well. That was 25 years ago.
I have removed the offending platform, but it could be worth applying some local eyes to that mappers work in case there is something else that we have not spotted.
It is cumbersome at times, but great fun. If you need any help just ask.
We have a UK mailing list and an irc channel.