Don't think I've seen this posted on here, on anywhere for that matter, but I caught this programme on BBC1 last night. It's now been put up on iPlayer:
http://www.bbc.co.uk/iplayer/episode/b01qqz31/The_Hunt_for_Britains_Metal_Thieves/It's an interesting look at the work of the
BTP▸ mainly to track down and stop metal theft. Towards the end of the programme there is a look at the operation to catch organised metal thieves who targeted the Cotswold line.