Restaurant Miniature Buffet

The Restaurant Miniature Buffet (or RMB) is a British Railways Mark 1 railway coach. It is a Tourist Standard Open (TSO) coach with two full seating bays next to the centre transverse vestibule removed and replaced with a buffet counter and customers standing space, and one bay on one side (same side as the buffet counter) removed and replaced with a store cupboard on the other side of the centre vestibule. They were built in five lots from 1957 to 1962.

British Rail Restaurant Miniature Buffet
RMB M1848 on the East Lancashire Railway
In service	1957–
Manufacturer	York Works (12) Wolverton Works (70)
Family name	British Railways Mark 1
Constructed	1957–1962
Number built	82
Fleet numbers	1801–1882
Capacity	48 or 44 seats
Operator(s)	British Rail
Specifications
Car length	64 ft 6 in (19.66 m)
Width	9 ft 3 in (2.82 m)
Height	12 ft 9 1⁄2 in (3.90 m)
Maximum speed	90–100 mph (145–161 km/h)
Weight	34.5–38 tonnes (34.0–37.4 long tons; 38.0–41.9 short tons)
Train heating	Dual steam and electric – ETH 3, Cooking by bottled gas
Bogies	BR1, Commonwealth or B4
Braking system(s)	Vacuum, air, or both
Coupling system	Drop-head knuckle coupler on draw-hook (dual)
Track gauge	4 ft 8 1⁄2 in (1,435 mm)

Quite a few still operate on the national network on Railtours, but not on service trains. A lot have made it into railway preservation and are used by many heritage railways in the UK. Even though the first batch had no store cupboard 1807 on the Watercress has been fitted with one and B4 Bogies.