I’m not sure that demand is heavily surpressed. There is only so much market for the routes Eurostar serve, and most of it is already on the rails.
But even then, HS1 and the tunnel each run out of line capacity long before St Pancras runs out of platform capacity.
There are nearly 20 million people in the London, South East, East and portions of the East Midlands/South West regions that are close enough to London to make international rail from London attractive.
The airport experience in this country is usually ****, especially with baggage limitations and the "wave of departures" timetabling style that budget airlines typically use.
Domestic holidays or short breaks in the country are often expensive, and weather is temperamental.
So short breaks or holidays in our nearest continental neighbours by rail are a very attractive proposition.
Even £50-£75 each way would be enough to start turning the tide and operators would still make decent profits with a high load factor - I agree that the majority of fares under that would not be viable with LGV/HS1/Eurotunnel fees.
With those lower fares on offer more regularly and the benefits of increased baggage allowances, it won't just impact low cost airlines, but short breaks by rail to the continent will start eating away considerably at the market share of domestic short breaks as well.
One of them, at least, will stop operating is my guess.
I highly doubt it.
£100 is, in my view, cheap for that journey city centre to city centre, given the Eurotunnel toll is in that and there’s no baggage charges etc.
Even with transport at either end and a 10kg cabin bag, Jet2/Ryanair/EasyJet/Vueling, sometimes even BA will beat that for a single to France or Belgium or the Netherlands.
Not to mention Flixbus/Sindbad, and rail + ferry combos, but I would say that competing on price with the latter two is unrealistic.
It's not just the London-Paris etc. market, if people saw that they could easily get a weekend in Paris for £78 return they'd be abandoning their plans to go to Prague and getting a bargain trip to Paris instead. The limit is only how much accommodation Paris and London have for each other's population to spend a weekend away. At that price, I wouldn't be surprised to see day trips becoming more popular.
Precisely, although I think £78 is unrealistic.
£90 return as a day trip special offer on Virgin would be great, especially if you could use Virgin Points (which can be converted from Tesco Clubcard points).
Maybe I was lucky but last year I paid £64 for an afternoon departure from London to Paris, booking a few months in advance.
That was convenient for me to make my way to London and get to Paris with plenty of time to get my onward couchette train.
It didn't seem an unreasonable price.
That's booking miles in advance though.
With the cost of basic socialising like a trip to the pub with a meal and drink, or a night at a bowling alley skyrocketing, if you could keep the cost of a day out on the continent below £125 (my £90 return idea would give you around 40 euro spending money if you're spending £125 in total pp), it would be very attractive to anyone within an hour and a half of St Pancras.
If you could drop that further to a £75 return and fill your trains to the brim, it would be massively popular, even if the £75 option was only secondary cities like Lille or Antwerp.