I would suggest that as you already have HOC registration you can apply directly for a UK job using PhysioBob's Jobs, www.physiobob.com, and you can even conduct a phone interview if required. That way you can organise the job before you leave and make it direct with the employer.

You are correct in that with under 5 years experience in the private sector jobs are hard to come by. Up to 95% of this years graduates don't have jobs! This is laregly due to BUPA restrictions in the private arena and therefore the lack of new grad positions opening up in the limited NHS.