URBAN - Which is Britain's oldest castle?

Readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific conceptsWhich is the oldest castle still standing in Britain?James Smithson, Leeds• Post your answers – and new questions – below or email them to nq@theguardian.com. Please include name, address and phone numberHeritageArchitectureHistorytheguardian.com © 2013 Guardian News and Media Limited or its affiliated companies. All rights res ...

http://www.theguardian.com/lifeandstyle/2013/sep/18/britain-oldest-cas