Have you seen how much Poland pay the riders , plenty of info via a Google search, all they have to do is offer a rider say £500 a point top riders are on 10 times that, then a clause in the contract you can only ride in one other league. Most riders are gonna put the polish money first, rather than ride in the UK for £75-£125 a point.
Just got to see how little the British final winner got £1750 😲 look up Dan T's vlog