http://www.caa.co.uk/docs/33/SRG2188FFenabled.pdf
is the link to the RTF application form. You now have until 17th September as the CAA have delayed EASA implementation, however they will probably insist any applications are submitted a month before that (as before) to allow for any mistakes etc to be corrected.
Not sure how a freelance could meet the requirements - you need to have a fixed base - but anyway, there it is!