According to Colin Mackinnon, an instructor contributing to a BMAA discussion thread I started, having an NPPL(M) automatically qualifies a pilot for the Fédération Aéronautique Internationale Bronze Colibri, without further tests being necessary, from which I infer that as some other participating countries do not have licences, this is a nod to the quality of training that British pilots receive.
I am rather chuffed. I shall have to get Flylight to sign my application form (I think that is necessary?) and send it off with the required fiver.
Now for the silver, though I will need to rack up the hours (100, incl 200 flights).