Defence Survival, Evasion, Resistance, Extraction (SERE) Training Organisation (DSTO) has been at RAF St Mawgan for many years now.
It combined the RAF Survival School (relocated from Mountbatten in 2008), the RN Survival School and the Resistance Training Wing.
https://www.raf.mod.uk/rafstmawgan/a...retraining.cfm