Thank youI hear people which have good experiences with the hollow section door seals available at Der Franzose (aka the Frenchman).
These as a set or these per meter (approx. 3m70 for the front and approx. 3m20 for the rear doors).
Tailgate seal above and down.
But then again there may be U.K. resources which I'm not familiar with.
Regards, Joop