RTL 234 has a feature tonight, La Saga des Radios Pirates Anglaises, interesting history feature on the programmes webpage for those with some knowledge of French, presumably 2300-0100 French time, 2200-0000 UK time:
http://www.rtl.fr/fiche/4701449/la-saga-des-radios-pirates-anglaises.html
Previous Saga features have been archived and are on Listen Again.
Info via Mike B on RadioAnoraksUk