Dunno if this has been picked up, did a quick search but couldn't find it.

It is been touted that the very first 'concentration camp' was at Norman Cross, in Peterborough. Time team have unearthed evidence of a camp that housed Napoleonic PoWs.
http://www.dailymail.co.uk/news/arti...--Britain.html

Can't say the area has changed much since.