Hi all,
A really nice person on the USA tech forums has got the answer, it seems to be an issue with the game running Direct X 11. If you run it Direct X 9 then it works fine. Wargaming seem to either not care or have a clue how to fix this.
Linky: https://forum.worldofwarships.com/topic/144613-latest-win-10-update-has-bricked-wows/?do=findComment&comment=3473384