A lot of experienced physiotherapists may advise you not to do this, but I think rather than detering new grads from setting up their own practice's, they should be supported as this help increase the awareness of the profession and stops new grads going elsewhere for employment and losing their clinical skills. I'd suggest that you start small, so that if it doesn't work out then you haven't put everything into it. For example look for a room in a local gym or sports centre and ask if you can hire it but pay per person so that you are not forking out rent when you are yet to book in any patients. Speak to your old lectures and ask whether you can contact them if you have a query or difficult patient, we're lucky that nowadays we can pop a clinical ques on here or another forum and get loads of great advice which may subsitute as peer discussions and advice. Also try to attend a local hospitals IST or look for any free course- I went on a free course on recent advances in spinal surgery- its good for networking and chatting to physio's/ sports therapists/ GP's etc about referals and different patients. There's also free business courses that local authorities run- you can contact them through the job centre and you get a business advisor who will inform you about such courses and available funding.

You could also try and make links with local sports/fitness clubs giving them discounts or travelling to them once a week. Remember though, money is limited at the moment so people are less likely to part with cash when they think that they can get the same treatment free through the NHS albeit after a 4 month wait.