Pirate radio special

Spotted by a Digital Spy poster:

BBC London 94.9
Monday May 4: 3pm to 7pm UK time (1400-1800UTC)

Tony Blackburn's Pirate Radio Special
A lookback at the era of pirate radio with Tony Blackburn, great guests and music.

http://www.bbc. co.uk/london/radio/

(via Mike Barraclough, radioanoraksuk)

I guess this refers to the offshore stations of the 60s rather than the current wave of FM pirates in London (which sometimes causes QRM to BBC London's FM channel).