Also, have a look at Keilir Aviation in Iceland. They have a conversion at a very good price, and Icelandic licensing fees are much less than the UK.
Licence Conversion | Keilir Aviation Academy

Another change with EASA transition regarding conversions is that the regulations say that an IR conversion will require training as determined by the administration. In the UK, it used to be 15 hours minimum, but the UK will have to adopt the "training as determined", so nobody really knows if they will say "training required for you will be 15 hours" or if it will be more or less.

Also, from the beginning to the end, you will curse the whole JAA/EASA system and wish that they changed it to the FAA. It is quite radically different here. Everything from having to reserve an instrument approach in advance for IR training (UK), being required to file a VFR flight plan and not being allowed to fly VFR at night (Spain), Surface Class A airspace, to the endless bureaucracy and money hole that is the whole system here. I mean, just to keep your ratings current every year, you have to send a renewal fee to the aviation authorities (139GBP every year in the UK, €50 every year in the Netherlands) etc...... You don't just get a signoff from a flight instructor, but you also have to send in lots of €€€€€€.