If you find yourself out late at night, then London Night Tube services are now running on the Central and Victoria lines. Night Tube services on the Jubilee line started 7 October 2016 and the Northern and Piccadilly lines will be running through the night from later in the Autumn. The Night Tube will be a 24-hour service on Fridays and Saturdays.
Spend a day at Buckingham Palace and watch the Changing of the Guards. If the Queen is in residence, the Royal Standard flag will be flying. You never know, you may even spot Her Majesty in person. Then head to nearby St James's Park, one of the Royal Parks of London, ideal for a picnic on a beautiful summer's day, or perhaps indulge yourself by taking afternoon tea at the Ritz or one of London's fabulous cafes.