Where can I find the UK law for freelance workers?

I have been taken on as a freelance worker for a company. They have given me training but keep me waiting about when I can start and won't communicate with me. Are they allowed to do this? It doesn't seem fair.
Update: Additional details - it has been 3 months now of them saying they'll get back to me.

 

Being your own boss, in the true self-employed sense, means that you generally do not qualify for employment law rights. The benefits of working for yourself means that you cannot claim sick pay and you have no protection from getting the sack, even if it would normally constitute unfair dismissal.
As the recent case of Miriam O’Reilly highlights, contract workers brought in to a business to personally undertake work do gain the right not to be discriminated against by part five of the Equality Act 2010, but this is only if you (and only you) are capable of doing the work.
Freelancers are entitled to a safe working environment according to health and safety laws, and of course freelancers have a right to be paid for work completed.