British Rail Mark 1 is the family designation for the first standardised designs of railway carriages built by British Railways (BR) from 1951 until 1974, now used only for charter services on the main lines or on preserved railways.

The Corridor First type of railway coach was one of the standard mid-20th century designs; coded 'FK' by the LNER and BR, and 'CL' by the LMS. The layout of the coach was a number of compartments, all of which were first class, linked by a side corridor .

The following list lists those codes that were used on BR cross-referred to the comparable code used by the LMS, with the exception that the letter S ("Second", later "Standard") is used where until 1956 the letter T ("Third") was used.

Sep 17, 2024 · BCK ran from 21000 to 21275 according to Parkin’s Mark 1 book, but the table shows a few gaps. So, if they aren’t typos, it was about 260. BSK ran from 34000 to 35499, with no gaps in the last five-hundred, where they are most likely to have been.

Nov 7, 2019 · When the BR mk1 coaches came into service in 1950, this method of the prefix denoting the region the coach was allocated to was continued but there were inevitably going to be number duplications within regions, so the system was amended.

Jun 15, 2022 · There are four different types of bogies (the wheels underneath the coach): the BR1, the BR2, the Commonwealth, and the B4. As the BR1 turned out to be a poor design, this was superseded by the BR2 and Commonwealth bogie designs.

Jun 18, 2018 · English: British Railways 's first design of carriages were given the designation Mark 1, it was intended to be the standard carriage design for use across all lines incorporating the best features of each of the former companies.

Mar 15, 2021 · Trains on older oil box fitted Mk1’s were limited to 90 mph unless they had SM stencilled on the end ( Special Maintenance) in which case they were 100mph. Vehicles on B4/5 and Commonwealth bogies were 100 mph and a few Mk1’s RKB vehicles on West Coast were allowed to go up to 110 mph on B5 bogies.

Jun 22, 2016 · Recently I had been looking through RM-Web for BR Mk1 coach info and consists. Turns out there isn't a dedicated thread to Mk1's?! There are multiple smaller threads, i.e. on liveries, specific variants, specific region consists, but no "general" Mk1 thread!

Sep 21, 2020 · The BR(M) was well known for their 'borrowing' of vehicles, and when it came to replacements for faulty coaches or strengthening services with additional vehicles they were pretty much added in based on the seating capacity rather than where they came from.