A train set a new record from Paris to London today. Here is the URL for more info.
And pretty good publicity. As well as the webreport BBC News 24 TV had a reporter on the train and one at St Pancras to welcome him to London just over two hours after leaving Paris. First few scheduled trains (early November) from St Pancras are already sold out.
The regular scheduled travel time between Paris and London from Nov. 14 will be 2 hrs. 15 min.