BA used to run a 'Placement Year' programme for undergraduates:
But ever since 9/11 they have freezed all recruitment in graduate programmes, undergraduate programmes and the Trainee Pilot Scheme! I think it will be a while yet till they restart any of these programmes! By all means check out http://www.britishairwaysjobs.com/
on a regular basis - you never know they may start recruiting!
In the mean time, I would suggest other airlines that have a HQ
base in Britain, for example Air France.
They usually have Work Placement programmes in management, customer service etc! Only last week they had something that could have suited you - I have just check know and they only have the Customer Relations work placement vacancy left, which I don't think is suited you - but again, by all means check out their website:
and click on 'About Air France', then 'Recruitment'!
I hope this helps!