The changing of the seasons in the capital, from dawn on the Thames and a swim in Hampstead Heath ponds to rowing in Putney and breakfast time at London Zoo.

A celebration of the city, including a visit to the Royal Ballet School to see the students at work and a meeting with the director of the National Gallery. Also, the Household Division change the guards at Buckingham Palace and the Houses of Parliament locksmith begins his daily rounds.

Featuring Evensong at St Paul's Cathedral, and a Beefeater's view of the city. The clock is wound at the Royal Naval College in Greenwich and there's a trip down the Thames with a man who has a family tradition of working on the river.

As the sun sets over the capital, the Diva Opera prepare for a performance at Chiswick's Syon House, the Cabinet War Rooms reveal people's memories of the Blitz, and the first editions of a national newspaper go to press.