Paul Scott wrote:

I thought I'd repost the link to the undercroft drawing, from last November.
You can see the 4 openings marked at the far left of the main 'arcade'
through the undercroft. Note the shopping facilities - they really are
trying to make it more like an airport...
And why not?
The current shops underneath the Eurostar platforms at Waterloo are very
welcome - you can get yourself a coffee or a magazine for the journey.
I'm not sure about a shirt - though the shops obviously have a market.

At the Brussels end there is a parade of sparkly new shops now (OK, new
since last year)