I don't think that Lambert was the aim of this move (No regulation should be written with 1 rider in mind anyway)
I believe this would be more looking at the likes of Cairns and Rushen - even Rowe,Kemp,Flint etc as well as any potential future 'superstars'
So as and when a prospect makes it they simply cant drop the UK
They will need the UK on the way up - backing,nominations etc and it is a albeit clumsy way of looking to secure their ongoing participation