Restaurant Miniature Buffet

{{Short description|British Railways Mark 1 coach}}

{{Use dmy dates|date=January 2018}}

{{Use British English|date=January 2018}}

{{Infobox train

| background = #0033cc;color:white

| name = British Rail Restaurant Miniature Buffet

| image = British Rail Mark 1 RBR M1848.jpg

| imagesize = 300px

| imagealt =

| caption = RMB M1848 on the East Lancashire Railway

| interiorimage =

| interiorimagealt =

| interiorcaption =

| service = 1957–

| manufacturer = York Works (12)
Wolverton Works (70)

| factory =

| family = British Railways Mark 1

| replaced =

| yearconstruction = 1957–1962

| yearservice =

| refurbishment =

| yearscrapped =

| numberconstruction=

| numberbuilt = 82

| numberservice =

| numberpreserved =

| numberscrapped =

| formation =

| fleetnumbers = 1801–1882

| capacity = 48 or 44 seats

| operator = British Rail

| depots =

| lines =

| carbody =

| carlength = {{convert|64|ft|6|in|m|2|abbr=on}}

| width = {{convert|9|ft|3|in|m|2|abbr=on}}

| height = {{convert|12|ft|9+1/2|in|m|2|abbr=on}}

| floorheight =

| platformheight =

| entrylevelorstep =

| doors =

| art-sections =

| maxspeed = {{convert|90|-|100|mph|km/h|0|abbr=on}}

| weight = {{convert|34.5|-|38|t|LT ST|1}}

| aux =

| powersupply =

| hvac = Dual steam and electric – ETH 3, Cooking by bottled gas

| bogies = BR1, Commonwealth or B4

| brakes = Vacuum, air, or both

| coupling = Drop-head knuckle coupler on draw-hook (dual)

| gauge = {{RailGauge|ussg}}

}}

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.

class="wikitable" ! Lot No. !! Diagram !! Built !! Builder !! Qty !! Fleet numbers !! Notes
30485	97	1957–1958	York	12	1801–1812	No store cupboard, 48 seats, BR1 Bogies
30507	98	1960	Wolverton	15	1838–1852	1851 fitted with B5 Bogies for EMU use, the rest fitted with Commonwealth bogies
30520	99	1960	Wolverton	25	1813–1837	Commonwealth bogies
30670	99	1961–1962	Wolverton	12	1853–1864	Commonwealth bogies
30702	99	1962	Wolverton	18	1865–1882	Commonwealth bogies

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.