There have been huge changes to the role of the monarchy in the last 50 years - so what challenges lie ahead in the next half century? David Dimbleby presents this special live debate from the Queen's House in Greenwich, south-east London, on how Britain's monarchy should evolve in the future, and hears from those fiercely loyal to the crown and others who would like to see a significantly reduced role for the royal family.
Producer Diana Martin ; Editor Alexandra Henderson TO TAKE PART: viewers can express their opinion by voting during the discussion either online atwww.bbc.co.uk/monarchy, via digital television or by telephone. Full details during the programme