Alot of these employment agencies are dictated by the customer..ie the employer.
I know of one, not a million miles from where I amwho actively seek out our new brothers in there own homeland.
Its not just good reliable cheap labour they target..its professionals as well.
I think if we all be honest, we'd do the same....they are a totally different breed in general, in the good sense, compared to there British counterpart at the moment...no disrespect here, just fact.