@Johnwwww
Take a look at this link, but what you have to bear in mind that boost will NOT remove promotional trailers for Sky/NOW content. It only removes third party adverts from on demand content.
https://help.nowtv.com/article/can-i-watch-without-ads
It is indeed very annoying there is no “skip” feature like Amazon prime video.
FYI that I do not work for NOW, just a NOW customer trying to help