This is a converted 117 DMU that is now Chiltern Railways own water cannon train. The unit had not been given the OK for its run down to Amersham 2 days prior to this picture being taken on Monday 27th October 2003, so we think this maybe its very first scheduled one. Ready for the 'off' at Ayelsbury is now re-numbered 960 301.
Photo from James & Martin's Picture Collection Copyright 'Jampics' m.hawkes7@ntlworld.com