BTCJam is good. I used them few times for loans. To be honest if you are legit and have the means to pay back then you will be accepted but like already said be ready to part with some ID doc's and other personal info to get a good credit rateing.
Also note if you default and don't pay back. ALL people who invested are entitled to your personal information for legal use.. so be warrned if you default your info goes to the people who invested.. read the small print..
Not Strictly true, Even if you agree to something in a contract it can still be a breach of law in your country or state especially in the UK regarding Data Protection Act.
If I were to default on a loan and my personal information was given out to P2P lenders that would be a breach of The Data Protection Act 1998 and I could prosecute the company for this action. I have looked up this information for a friend and spoken to a lawyer about it.