The wet stuff.......
All UK registered airlines have to get cabin crew to do a 'one-time' wet drill on entry to that company; however if you transfer e.g. B.A. to VS, you will need to do it again, even though you only need to do it once in a lifetime; indeed if you transfer to another JAR carrier, you don't need to do it - I have worked for various UK operators and European carriers - the European carriers have accepted the proof of my having done wet drill and it saves them time (and expense!) of putting me through it again