Among the crowds on The Mall today there will have been many people claiming that they're the greatest royal fan. But that title must surely belong to Margaret Tyler who has the biggest collection of royal memorabilia in the country - more than 10,000 items.
London Tonight's Business Correspondent Glen Goodman reports:
More top news
Low cloud rolling in from the North Sea tonight to give some patches of mist and fog.
Train, tube and tram passengers can use bank or credit cards to swipe open ticket barriers from today.
The Rightmove September House Prices survey is out today, revealing how house prices are changing in every London borough.