No. 230 Operational Conversion Unit (OCU) was first created on 15 March 1947^[1] at RAF Lindholme, by re-designation of No. 1653 Heavy Conversion Unit RAF, to convert crews onto the Avro Lancaster, Avro Lincoln and de Havilland Mosquito bombers. This unit was disbanded on 15 August 1952^[1] to become the Reserve Training Squadron RAF. Re-formed again at RAF Upwood, from the Lincoln Conversion Flight RAF, 230 OCU trained Lincoln bomber crews until disbanded on 1 February 1955,^[1] reverting to Lincoln Conversion Flight.

No. 230 (Heavy Bomber) Operational Conversion Unit RAF No. 230 Operational Conversion Unit RAF
Avro Vulcan B.2 of 230 OCU in 1971
Active	1947-1981
Country	United Kingdom
Branch	Royal Air Force
Type	Conversion Unit
Role	Bomber training
Last base	RAF Scampton

Re-formed yet again on 31 May 1956^[1] at RAF Waddington, 230 OCU thereafter trained crews for the Avro Vulcan, moving to RAF Finningley in 1961 and to RAF Scampton in 1969, remaining there until it was disbanded in 1981.^[2]