Pretty much as mentioned in the comments above, I did a fair bit of research before ditching my licence - even contacted Capita for clarification over some details (they never actually got back to me, I wanted something hard in email. Not a surprise).
If you watch a live broadcast in UK or watch BBC iplayer you need a licence. That's it.
Radio, catch up (providing it's not iplayer) is fine. Amazon Prime is ok - so long as it's not one of the live sporting events, this point gets a bit tricky, in theory if you're watching a TV show on Channel 4 catch up and that show is also being live broadcast - you're in breach.
What's not on is anything live broadcast, so local TV stations (Chanel 4, 5, Sky - even foreign satellite) are off the menu.
Anything catch up is fine. You can have a TV aerial, a satellite dish - you can even leave everything connected and tuned in. So long as you don't watch live TV, you're golden. Of course if you let an inspector in (and that's a bad idea), good luck proving that.
As for me ? I left the aerial in, satellite dish too. I disconnected everything and detuned. I don't plan on letting inspectors (salesmen) into my property either.
This is one of the reasons why I hate the BBC. I don't need to go to these lengths if I want to stop watching Netflix etc. I can stop and then restart when there's something good to watch, no questions.