Secrets of the Royal Gardens

A rare tour of the royal palace gardens of Buckingham Palace, Kew and Kensington Palace

A visit to London's royal parks, from hedgehogs in Regent's Park to red deer at Richmond

A tour of the gardens of several private royal houses, from Sandringham and Dumfries House, to Prince Charles' pride and joy - the gardening paradise of Highgrove

The gardens and vast estates found at the royal castles of Windsor and Balmoral, revealing how Windsor has changed over the centuries, including various designs by Prince Philip, and how Balmoral was created after Queen Victoria and Prince Albert fell in love with the Scottish Highlands.