I came across this website after Mike Barraclough posted a link on Facebook and it might interest anyone who listened to the pirates on medium wave and shortwave in the 1970s.
It has been put together by the former operator of Skyport Radio and particularly focuses on stations which operated in the London area during that time.
Among stations featured are Radio Jackie, Radio Concord, Skyport Radio and Swinging Radio England (1974-77), but many more are mentioned.
In additions there's photos, stickers and posters, plus copies of articles from Time Out, Free Radio Magazine and Free Radio Focus from that time.
If you're interested in free radio from that period then it is certainly worth checking out this website at https://sites.google.com/view/gunfleet/home
On the subject of radio nostalgia, I'll mention my other blog, Pirate Memories, which has many audio clips from shortwave, medium wave and FM stations from the 1980s, plus QSLs.
Its address is https://piratememories.blogspot.co.uk