London
If you can’t take the Eurostar train or fly, or if you want the cheapest way to get from Paris to London, taking a coach or bus is the best way to travel across the English Channel from France to the UK.
A European company called Eurolines runs buses from Paris to London in conjunction with the British company National Express. Their coaches leave Paris Gallieni station for London Victoria Coach Station five times a day between 8:30 and 23:00.
The stated travel time between these cities is 6.5 to 8 hours, depending on the departure you choose. However, traffic can cause delays, so make sure to leave yourself extra time if you have an onward connection to make when you arrive in the UK.
Coach tickets for Eurolines and National Express buses from Paris to London can cost from 13 euros one-way if you book in advance and take advantage of special online fares.