Buy your return ticket on Eurostar.com and travel by train from Bordeaux to the centre of London. Take a TGV train from Bordeaux St Jean station and jump on a Eurostar train in Paris from where you will be reaching the British capital in just 2 hours and 15 minutes.
From Gare Montparnasse, take Metro 5 direction Porte de Clignancourt which will take you straight to Gare du Nord (about 45 minutes).
Once in Gare du Nord follow the signs 'Eurostar' until you reach the departure's lounge where you will be able to check in and hop on Eurostar to London.
With its world-famous museums, West-End shows and quirky markets, you can never get bored in London. Discover what to do for the perfect city break.