It used to be the case that guys and gals would flock in from RYR and EZ. There have even been a handful going back to EZ recently believe it or not!
The fact is that if you are close to a command at either of the above (or elsewhere for that matter), all of a sudden it isn't a cut and dried decision to head for BA anymore, especially as there is currently no direct entry onto longhaul. 34 pay points for new joiners (34 being the same as the old 24), the BARP pension (middle of the road compared to the competition, by all accounts) and a long time to either RHS longhaul or LHS (any) make it a less attractive proposition than it used to be.
You will do at least five years on shorthaul at LHR (do your research carefully as to what that actually means in terms of lifestyle.
) before you are able to bid to move to longhaul RHS. Even then you need the seniority, which you may or may not have (research the demography). A shorthaul command will traditionally occur at some point after longhaul. Currently this is running at nearly fifteen years for a LGW command, slightly more for LHR (this does vary a little to be fair). Longhaul commands take significantly longer.
Welcome aboard but for Pete's sake do your research properly.