Time for a little update:
Having had a little luck with the availability of planes, an instructor, and the weather I managed to complete 12 hours and 12 landings (plus a little extra) in the nice scenery in and around Jerez. The only downside was that I wasn't allowed to land anywhere except in Jerez because all the planes that I got were EASA-reg'ed and thus didn't fit my license and the instructor was a bit afraid I might end up grounded in some other airport.
The only thing left is a UK FE's signature (or an UK instructor with FCL.945 privileges) but I am positive that I will find a solution for this as
http://publicapps.caa.co.uk/docs/33/ORS4No1484.pdf gives time till July for this (which I don't think I need).