While we were out looking for a disused hospital, came across a nice water tower, which just said 'climb me'...
http://www.multimap.com/map/browse.cgi?client=public&X=419000&Y=582000&width=700&height=400&gride=419094&gridn=581853&srec=0&coordsys=gb&db=pc&addr1=&addr2=&addr3=&pc=NE616AW&advanced=&local=&localinfosel=&kw=&inmap=&table=&ovtype=&keepicon=true&zm=0&out.x=8&out.y=8&scale=10000
http://www.multimap.com/map/browse.cgi?client=public&X=419000&Y=582000&width=700&height=400&gride=419094&gridn=581853&srec=0&coordsys=gb&db=pc&addr1=&addr2=&addr3=&pc=NE616AW&advanced=&local=&localinfosel=&kw=&inmap=&table=&ovtype=&keepicon=true&zm=0&out.x=8&out.y=8&scale=10000