Assuming you are looking for a 139 TRE ?
If it matters not - then I heartedly recommend Leon at Helcopterservices - Booker
Not only is he one of the most experienced CAA-approved examiners/instructors about but he demonstrates a level of pragmatism and common sense hitherto unknown in that training environment......
Can only speak from experience but you had better hurry before the latest round of EASA updates and contradictions makes him throw in the towel!