What is British Rail Class 252?
{{Infobox Train |name = {{color|white|British Rail Class 252}} |background = #012545 |image = 252001 - weston s mare - 1975.jpg |imagesize = 300px |caption = Prototype HST 252 001 at [[Weston-super-Mare]] in [[1975]]. | Manufacturer = [[BREL]] [[Crewe Works|Crewe]] | Factory = | Family = | Built = | Refurbishment = | Replaced = | Formation = Two [[British Rail Class 41 (HST)|power cars]] flanking 10 Mark 3 coaches | Designation = 252 001 | Operator = [[British Rail]] Western Region | Depots = | LinesServed = | yearconstruction = 1972 | yearservice = | yearscrapped = | numberconstruction = | numberbuilt = 1 trainset | numberservice = 0 | numberscrapped = | CarBody = | CarLength = | CarWidth = | CarHeight = | floorheight = | platformheight = | entrylevelorstep = | art-sections = | doors = | MaxSpeed = {{convert|125|mph|km/h|abbr=on|lk=on}} | Weight = | Capacity = | Acceleration = | Deceleration = | Traction = | Engine = [[Paxman Valenta]] 12RP200L, 2 off | Power = | Transmission = | Auxiliaries = | Power-supply = | Gauge = {{RailGauge|sg|lk=on|al=on}} | Voltage = | Brakes = | SafetySystem = }} [[Image:252001 - reading - 1975.jpg|thumb|252 001 arriving at [[Reading, Berkshire|Reading]], [[1975]].]] [[Image:BR_Mk3_12000.jpg|thumb|One of the first Mk3 coaches No:E12000 to be delivered to RTC, Derby in the summer of 1972]] '''Class 252''' was the classification allocated to the prototype [[High Speed Train]] unit, numbered 252001. {{Transport-stub}} {{British Rail DMU}} [[Category:British Rail diesel multiple units|252]] [[Category:BREL products|252]]