On my travels I came across a Nuclear bunker tour! At Broadway Tower. It was only £3.50 for the tour and was well worth it except for the lady who took the money was a right bitch. She was so horrible, trying to hurry us up as we were the last tour of the day. In contrast our tour guide/history fanatic was brilliant. He told us the history and let you actually touch the items and look through the old instruction manuals and leaflets.