Just done one..First aid at work..3 day course, done mine thru St John ambulance. Cost around £300 +vat You have to be a bit of an actor on the final day.....every one passes......now thats a surprise!!!! Well worth it tho
3 years buddy
I might be wrong but i think most companies who provide first aid training contact you and let you know when you need a refresher course. We recently had two of our staff have their refresher course after 3 years.
You can try your local scuba dive shop they have first aid instructor.
Bet they are cheaper than anyone else