It seems that after a some years, i can join the Dutch WNBR again and may be, i will try to join the Brussels WNBR.
The good thing is that since november the German company Flixbus operates (in coöperation with local partners) very cheap direct bus connections between my city, the Netherlands and Brussels.
Also they started some days ago with a direct bus connection from Eindhoven in the Netherlands and Belgium to London!!! Prices starts from just +/- 19euros (Eindhoven) one way If i had no duty in the weekend of 11th june, i sure had booked this busconnection to join one or more UK WNBR's. Unfortunately, it will be for next year!!!