page_title: British Rail Class 438
section_title: Further use
hierarchical_section_title: British Rail Class 438 / Further use
caption_attribution_description: Metropolitan Railway Trailer Control Unit, former Class 438 4TC vehicle, Number 76324 seen here at Amersham station.
context_page_description: The British Rail TC multiple units were unpowered fixed formations of 3 or 4 carriages with a driving position at each end of the set, converted by BR's Holgate Road carriage works from locomotive-hauled Mark 1 carriages in 1966-1967 and 1974. The units built on experience gained from the prototype 6TC unit. In time the 3 car units were reformed into four car units to match the rest of the fleet and later classified as Class 442. This was later changed to Class 491, under which they spent the majority of their working lives. Shortly before withdrawal they were reclassified Class 438 and the units were renumbered to 8001-8034.
context_section_description: Following withdrawal from passenger service, several vehicles were sold for further use with London Underground. They were used primarily for special excursions trains on the Metropolitan line, hauled by either steam locomotives, or the preserved electric locomotive No. 12 "Sarah Siddons".
  Details of the vehicles sold to London Underground are given below. For further information, see London Underground coaching stock.
  Six 4TC vehicles were formed into a test train in 1994 for use by Eurostar to test the third rail pick-ups for use by the Class 373 EMUs. This train consisted of two DTSOs, three TFKs and a TBSK, combined with a Class 73 locomotive and converted Class 33 Driving Van.
  Preserved set 417, running with only three coaches, and preserved class 33/1 33103 were hired to Silverlink for a short time in August 1999 for use on the North London Line.
caption: 4TC vehicles in use on the Metropolitan line
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