All things communications

Any of the providers from the big ones like Movistar and Jazztel to the one that only deals with your town will be very happy to sell you landline, ADSL, mobile with the options to link into some (Spanish) TV package. 

As RibeiraSacra says this is Spain so the only way you get British TV is by a dodgy method whether that's putting upa big dish in your back garden and stealing the signal or using some provider who will steal the signal for you by one means or another and then sell it on to you.

Once you have Internet there are all sorts of work around ways to get to see British TV programmes  and there are plenty of legal ways to get lots of content that's in English but available through legit providers such as Netflix, HBO, Sky Spain etc. If you sign up for the (much cheaper) Amazon Prime in Spain then you can also access their content and their fire stick is a good way to get to Netflix etc.

The major Spanish broadcasters have a lot of content that comes, particularly, from the US and nearly all of that is broadcast in dual language. A couple of pushes on your remote control and you can get tens of American series and sitcoms plus nearly all the films in English