I'm looking to do the SSI Diver Stress & Rescue course on holiday abroad this year (not sure where yet), but I know that I need a valid first aid certificate prior to taking the course, which I intend to sort out whilst still home in the UK. Trouble is, I can't work out what first aid courses are going to be appropriate and which aren't - even the SSI site says different things in different places. I know I'll need CPR which I can cover off with a £45 Red Cross course, but I've seen some places saying that it has to include oxygen administration, which is a more expensive "professional" course. I don't want to spend money on a course only to turn up on holiday and be told it's not acceptable and not be able to do my S&R course.