Sir Laurence Olivier is to get a Blue Plaque in his honourLate actor Sir Laurence Olivier, a Second World War military strategist and a Victorian-era photographer are among the people being honoured as nine blue plaques are installed in London. Other plaques will include photographer Julia Margaret Cameron, film-maker Jill Craigie, military strategist Brigadier Dudley Clarke, anti-racism activist Kamal Chunchie, journalist Duse Mohamed Ali and astronomer Cecilia Payne-Gaposchkin. Sir Laurence’s Blue PlaqueThe nine new additions are completed by tributes to social reformer Gertrude Tuckwell and writer Stefan Zweig. Payne-Gaposchkin’s Blue PlaqueEnglish Heritage says the plaques are subject to approval from the properties where they will be installed, which are usually places where their subjects lived or worked. Subjects also have to have made an exceptional impact in their field, made a positive contribution to humanity and lived in London for a significant period of time.