So if you have a computer they can make you buy a TV Licence?
No.
If you watch tv on it - as it is broadcast, and that includes the slight delays on cable, satellite etc - then yes. For iplayer, no - for radio, anywhere, no.
Also, if you have tvs that you do not watch tv on, you do NOT need a license, you do NOT need to give your name, prove or explain anything, go to their website, or let them into your home.
Can't remember exact website address, but search for TV Licensing Laid Bare, free downloadable pdf explaining everything.
There's plenty of other sites.
And the letters are computer generated, often with slight misspellings of your name etc, so they can get away with what is harassment.
Also, only found this out yesterday, but bailiffs have 'rights' regarding tv licenses they don't have regarding various other debt, as the tv license is considered a 'payment to the government'.
So BBC are a government organisation.
Obviously, I am presuming tv is not being watched as broadcast.