The BBC's programmes aren't, as far as I'm aware, geoblocked.
I loved Americana... until Radio 4 removed it and replaced it with an interminable panel game featuring four of the usual suspect "comedians" who seem to take up an inordinate amount of the station's airtime.
Now, I go the other way, and listen to a lot of stuff on NPR stations from the US.
The TV stuff tends to be. The radio programmes are not. This is because one needs to pay a license fee in the UK to watch television, which funds the BBC. Listening to the radio is free, however.
(http://www.bbc.co.uk/radio4/podcasts/)
I recommend:-
http://www.bbc.co.uk/podcasts/series/maths
http://www.bbc.co.uk/podcasts/series/ahow
http://www.bbc.co.uk/podcasts/series/americana
http://www.bbc.co.uk/podcasts/series/analysis
...well, you get the hint. There are very many hours of great quality reporting there.