In reply to Doug:
A month ago on a trip to Céüse, still mostly a very civilised way to travel.
However, checking-in was much slower than last time I used it (6 years ago) due to a combination of vaccine status and passport checks compounded by inadequate staffing at the London end. I turned up at the recommended 90 minutes ahead of departure and was glad I did. Getting there 30-40 minutes beforehand, as I have done in the past, might have meant I'd have missed the train or, at best, had a very stressful time relying on Eurostar to whisk me past the queues.