Three vehicles became the Chiltern Railways water jetting train.
Two cars were converted in 2003:
977987 ex 51371
977988 ex 51413
A third was added in 2004, being a powered centre vehicle. This was converted from
previously preserved DMS, which had the cab cut off and a gangway end added:
977992 ex 51375
It's pictured in the sidings at Aylesbury in January 2007 by Fred Clark.
This may be classed as a 'non-passenger' 117, as it was made for the public, but they certainly never went anywhere in it! This is a wooden mock-up, numbered 51401, containing a cinema which seated 62, an information bureau and "sectioned scale models which operated at the touch of a button". Built for the "Boys' and Girls' Exhibition" held at Olympia in the early '60s.