I like the idea of the inexpensive idbus option from London to Paris. I want to maximize my travel time so plan to take latest bus 22:00 (or so) overnight with arrival early AM in Paris. Thoughts? Experiences?
A couple of times we have used the Eurolines bus, London to Paris, on overnight journeys. Once the bus actually was loaded onto the Eurostar, so that made for an interesting trip. We did arrive in Paris at a very early hour, before the Metro had even started, actually, so take that into account.
Megabus (www.megabus.com) is another company which does coach travel between London and Paris (and many other routes). They have 2 journeys per day, one of which is overnight. i suggest you look at all three service providers to see which time and price suits you best.
Thank you for the good advice. Will look into alternative bus lines.