Llamaman - Comp A jobs were classed as SAROPs if a SAR cab was used as they take precedence over almost everything. I picked up a chap from Heathrow at 6am one sunny morning in a Sea King to take him to Bristol where his father was VSI - in less than 15 hours he had gone from being on patrol in Helmand to being at his father's bedside.
However, taking engineers to a rig hardly counts as compassionate - I presume the ARCCK gave their permission (if they were actually asked)