Despite promises that Olympic jobs would go to UK citizens

Further revelations about the Olympic disaster concern the appalling standard of accommodation offered to foreign workers enticed here by the prospect of work.
I can clearly remember a proclamation by Seb Coe's office that work in the Olympic park would be given to UK residents. But it seems that the cleaning work has been given to hundreds of, mainly East European, foreign workers. They have been put up in temporary cabins in a camp which is overcrowded and flooded.
To be honest though I'm less concerned about the comfort of the cleaners than I am about the type of visa given to these people. Has the feckless UK Border Agency given them a new type of visa entitling them to work for two weeks only. I doubt it and I doubt too that the workers will return to their own coutries after the increasingly farcical games.