Thought I had explained the options for Firestick earlier! You can put Kodi on it which will give you channels etc Free but isnt always stable, does suffer quite a bit of buffering and is sometimes quite a bit of hassle finding the stream OR you can put an IPTV app onto it and buy a more stable...
If Im not mistaken a Roku stick is very sililar to a NowTV bow as Roku basically make the NowTV boxes but they are just rebranded to NowTV in the UK! He is probably talking about downloading Kodi which yeah will probably get all TV channels including sport bu then maybe not work 100% of the...
Much better option is an IPTV line via Amazon Firestick/TV/SmartTV imo........more channel options at a much cheaper cost than Sky/Virgin!!
I can hook up the lines so PM me if want more info.