Disneyland Paris/ train to London

The only train to London from France is the Eurostar and it leaves from the Gare du Nord in Paris. You must get yourselves to Paris from Disneyland one way or another and then to the Gare du Nord.

There are some Eurostar departures between London and Eurodisney during holidays. https://www.eurostar.com/rw-en/city-breaks-in-europe/france/disneyland-paris-vacation

There is a direct eurostar train between London and Euro Disney. If you choose not to use the direct train the fastest connection will be TGV from Disney to Lille, from there hop on the chunnel train to London St Pancras.

I am very sorry to have misinformed you, roditron, and happy to have learned something new.

One of your other posts makes me think you may be travelling during March 2019?

If that is the case, are you aware that until the summer school holidays the only frequent service from Marne-la-Vallée is during school half-terms, and there are none of them in March?

In March there are only twice weekly services, one on Friday and the other on Sunday, leaving Marne-la-Vallée (near Disneyland) at 16:55, calling at Ashford International and Ebbsfleet International and terminating at St Pancras International at 18:47. Train number 9057.

Does that fit in with your schedule? If not it will be into Gare du Nord for you all.

Yes
We land in Paris on March 26th and need to be in London on March 31st 2019.
We were planning on Disneyland either 29th or 30th.
If we need to go back through Paris anyway we would probably do Disneyland on the 29th and have the last day be in Paris before London.

While there maybe few direct trains from EuroDisney there are many services that involve a simple change at Lille. Far easier than travelling into Paris, so your idea about moving this to your last day is a sound one.

Thank you!!
I’ll do some more research then.
Easier for me and my wife and the kids get to stay at the Disneyland hotel.

In March there are only twice weekly services, one on Friday and the
other on Sunday

Not so. Throughout the entire month of March there is direct service on Sun, Mon, Wed, and Friday.

yes, that's right. I missed the out of order number 1 footnoted line for the earlier ones in the week. They get to London an extra hour later.

Good catch.

What site is best to get tickets?

Eurostar.com for both the direct train and the connection via Lille.