P stock car No 14233 was built in 1939 and was partially destroyed in an air raid at Neasden Depot in Sept 1940. On 7 Sept a Q38 stock trailer 013167 had been damaged in an air raid at Plaistow. It was decided to produce one carriage from the remains of the two. It re-entered service in 1941 as 14233. In the 1960s the metadyne control equipment was replaced with PCM resistance control equipment. It went to the District line in 1963 as number 54233.  It now resides at Quainton Railway Society