I have searched through the forum on the topic and plan to do some more searching later. in the mean time as anyone ever done the day trip to Paris via Eurostar? I have seen reviews on evans evans day trip to Paris tour but not much on the one that can be purchased directly on eurostar's site. I'm currently considering the Paris Rail Day Trip from London for US$285.99; it includes local Paris guide, Level 2 Eiffel Tower, hop-on hop off bus tour and Seine River Cruise.
I'll be celebrating my 30th birthday and plan to travel to London just for 4 days but plan to squeeze in a day trip to Paris since I have been to London before and will likely return multiple times as family is there.
In London forum they have suggested viatour-whish is a go between-booking agent.
If anyone can suggest other tours I'd appreciate your feedback also. I plan to book a tour by the end of the week. Yes I know I can book and do on my own but this seems cheaper and smarter given the time frame (plus I might be doing this alone so don't want to go it without a guide).