Hello,
in case anyone stumbles across this thread in the future I managed to get hold of a qualified electrician at work today, he said dutch sockets usually have a 16A fuse and can run the BM50 so long as nothing else on the ring is pulling much power. He also said most houses have a dedicated 16A feed for the washing machine which can deliver 4000w.
Two suppliers in the NL have also told me the BM50 will run ok on a normal dutch plug.
Cheers
Paddy