Thanks to all for the replys, all paperwork underway !
The Modes S situation is slightly confusing, but having spoken to Amsterdam Heliport there is no requirement for it as long as you are below the necessary height, the only problem is with the NSAA , as Mode s is required even below 1200 feet. and the NSAA has a pretty big area of the coast, means a bit of a detour to get around the bottom of it , does anybody have any experience ??
Best regards
HB