I would imagine it would be very hard to get into security work at any airport, with plenty of vetting, probably best to contact BAA direct by telephoning to ask them the application proceedure.
Airport security jobs
There will jobs in security at heathrow, but surely you will need qaulifications and training plus lots of security checks.
BAA give a secure job in any airport. You may choice your job if you have proper qualification. So apply in the catagory in your choice.
Yes I went for one and now I'm head of security: try www.baa.com