Wolverton works turned out this vehicle in 1921 shortly before the grouping.  It is built to the final design of LNWR suburban stock, 154 of this type being built between 1914 and 1922, with a further 51 built by the LMS in 1923 / 24.  When taken into LMS stock, No. 7340 was renumbered 7107 and then became No. 22736 under British Railways.

In March 1957 the vehicle was deemed surplus to requirements and was withdrawn from passenger service.  However, it was requisitioned for use as a riding van and taken to Derby for conversion in May 1958.  The original six compartments were removed and replaced by two "lounge" sections, a kitchen and toilets.  Renumbered DM395209 it was attached to the Bletchley breakdown crane to provide accommodation for the crew, before being finally withdrawn in 1976.  It arrived at Quainton in 1978 under the ownership of the GCR Coach Group.