First Open

A Mk3 First Open coach at Marylebone, September 2008

A Mk4 First Open coach in GNER livery pictured at Leeds in 2006

A First Open or FO, is a type of railway carriage used by British Rail. They were first produced as British Railways Mark 1, and subsequently Mark 2, Mark 3, and Mark 4 variants were produced. This type to carriage is an "OPEN" because of the arrangement of the seats inside - other types of carriage may be corridor based variants (FK)

Mark 4

Built in 1988 by Metro Cammell at their Washwood Heath plant in Birmingham, the coaches are 23 m (75 ft 5 ¹⁄₂ in) long with power operated sliding plug doors, are fitted with SIG bogies and are capable of running at up to 140 mph (225 km/h) but usually run at a maximum of 125 mph (201 km/h).

Mark 1	BCK BFK BSK BSO BSOT CK FK FO RB RBR RF RKB RMB RU SK SLC SLEP SLF SLSTP SO TSO CL BS S SO - (Suburban non-corridor)

Mark 2	BFK BSK BSO BSOT BUO DBSO FK FO FOT PFB PFK PFP RFB RLO RMBF RSS SK SO TSO TSOT

Mark 3	BFO CO FO RFM SLE SLED SLEP TSO TSOB - (Locomotive-hauled) TF TGS TRB TRFB TRFK TRSB TS - (InterCity 125 trailers)

Mark 4	FO RBF RSB TSO TSOD TSOE - (InterCity 225 trailers)

Non-passenger carrying
carriage stock (NPCCS)

Mark 1	BG BPOT BV Courier CCT GUV PCV POS POT TCV

Mark 3 & Mark 4	DVT

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First Open

Mark 4

See also