"You will need to either transfer your medical records from the Cypriot 'CAA' to the UK CAA, or, and this might be easier, do another medical when you get back"
I do not believe you can simply do another EASA medical in the UK anymore as you are not allowed to hold 2 EASA medicals. I would advise you to check with the UK CAA but I believe you have to do a SOLI (State of Licence issue) change.
link here
http://www.caa.co.uk/docs/49/Process...0of%20SOLI.pdf