All you need to do is ensure you have a supported device listed in the link below.
My recommendation is an Amazon fire stick
Hi @Anonymous User
Amplifying what @gavs82008 has said, with every membership (pass, e.g. your Entertainment, Cinema, etc. everything except Sky Sports Mobile), your subscription is good for you to watch it on as many supported devices as you like - mobile, TV, tablet, Roku, Amazon Firestick etc. Now sell you the membership, but don’t restrict in any way which of their supported devices you watch it on.
The only restriction is that you are limited to one device at a time, unless you have bought Boost, which gives you three streams at a time, plus other goodies.
So you can be watching on your mobile, and as long as you exit the programme (rather than pause it, just close the app, or just switch your phone off), you can start Now on your TV, say (as long as there’s a Now app on it) and instantly carry on from where you left off on the phone.
It’s all very flexible!