EXEZY,
Have a closer look at the on-line recruiting stuff when it appears, that may give a clue as to how BA are interpreting "current". I assume the recruitment will be done through
www.britishairwaysjobs.com, which is also the portal for the current cabin crew recruitment being conducted for 'new fleet'.
If BA aren't more specific about the word "current", then have a go! However, I
personally feel (unverified) that it probably means 'rated, and regularly operating the aircraft as of today'. I take that standpoint merely from a view of BA probably wanting the cheapest and quickest way to get people on the line. I say again, it is a
personal view only. For those of you out there who wish to join BA,
you have to stick the line in the water to get a bite, so it is up to
you to sensibly do what you need to.