Ian,
Theres a difference between Social and Inland Revenue, You might be able to prove its all legit with them, but The IR could say you shouldnt be operating that way in the first place and make you change.
Its that part of it I want to get straight so as not to make life too complicated for myself,
If theres a certain criteria ( for using self employed workers ) to be met and you can prove your complying with it then I cant see a problem, its when you start telling porkies it may come back to haunt you, ( mixing me metaphors a bit there

)
How do agencies operate that supply temporay workers, are they employed by the agency or do they operate on a self employed basis ?
Regards
Steve