Day 19: Trafalgar square. St Martin in the fields. Lunch in Crypt cafe and brass rubbing. National Gallery - Monet, Manet, Van Gogh, Constable, Rembrandt, Ruebins, Gainsborough, Reynolds.... the list just goes on and on!
Day 20: Natural History Museum
Day 21: Hampton Court Palace.
Day 22: Westminster Abbey, Harrods, Victoria and Albert Museum. Flight back home.