Thanks
BEagle that's what I thought until I started investigating, hence my initial assertion that I have a non-part-21 a/c. However the head of training at the LAA (who run the NPPL on behalf of the CAA) tells me that, "The training is usually carried out on a Part 21 (EASA) aeroplane (because you're not exercising licence privileges until you possess the licence) but in general can be on a non-Part-21 aeroplane if you are the owner or part-owner."
So I think the rules may have changed?