An all-day tour organised by Golden Tours. A private visit to Leeds Castle is followed by a trip to Canterbury Cathedral, the White Cliffs of Dover and Dover Castle. Back in London you will visit the World Heritage site of Greenwich and take a boat ride on the Thames. Pick-up point is 4 Fountain Square, 123-151 Buckingham Palace Road, London SW1W 9SH. Click the 'buy tickets' button below to book online through Time Out.