David Bowie, Marc Bolan, Sir Peter Cushing, Sir Christopher Lee, Roald Dahl, Elizabeth Taylor, Alan Turing, Cary Grant ( Born in Bristol ), George Michael (Born in Finchley, North London), Beatles mentor, George Martin, John Lennon...and a few more...are my choices. :-)
How about some true revolutionary spirits? Thomas Paine or Oliver Cromwell.
Paine was a leading figure in both the American and French revolutions. Cromwell is credited with creating the beginnings of Parliamentary democracy and rightly has a statue outside the Houses of Parliament.