Just something I used last year and one or two of you may be interested. I no longer subscribe to a pay TV channel plus I prefer to watch my F1 with as few commercials as possible, as a result, last year, I searched and discovered this site.
It enables you to download an app onto your PC that enables you to watch, live all 4 practise and qualifying sessions plus the race live, with only practice sessions having commercials, they are British commercials, it also shows other sporting events. so here is the website for the app.

Regards

Sean

http://firstrowsportapp.com/