From that great authority of complete an unbiased news -
the Daily MailNight train to Nice? Rail body calls for sleeper trains to use Channel Tunnel due to rise in post-Covid eco-tourism
* Night trains, including from Brussels to Stockholm and Vienna, are being revived
* Rail industry has proposed to run sleeper trains through Channel tunnel
* It is in order to cater for growing demand for environmentally-friendly travel
* Many sleeper services were phased out after the rise of budget air travel
[snip]
Overnight trains running internationally from the UK▸ could mean passengers going to bed in the UK and waking up for breakfast in Barcelona.
Behind a firewall at
https://www.thetimes.co.uk/edition/news/call-to-let-sleeper-trains-use-channel-tunnel-mt7sv0bdk, The Times addresses the issue of the economics of running sleepers through the Channel Tunnel
... night trains are being revived in several European countries, including from Paris to Nice and Brussels to Stockholm and Vienna, and rail companies also want international sleepers to serve the UK.
However, to do so economically, they say the stringent safety rules governing the Channel tunnel would need to be relaxed because they currently require very specific and expensive rolling stock. ...
A few years back now, Lisa and I came back from Barcelona overland by train - evening train to Toulouse (I think it was), Sleeper to Paris, Metro across the city, Eurostar to St Pancras, 205 (I suspect - can't recall) to Paddington,
HST▸ to Swindon, local train to Melksham, taxi for the final mile. Would love to be able to cut out some of the awkward Paris and London stuff, though a sleeper service from Barcelona to Weymouth, dropping off at small intermediate stations like the Deerstalker with servicing facilities in Jersey Sidings like they have at Long Rock, sounds far fetched and a hard economic case to make. Mind you, there might be not only a market for Southern England to Spain for holidays (passengers from the West Country change at Westbury, from Bristol and South Wales change at Swindon), but also for Toulousians and Parisians to visit the wonders of Dorset and the Jurassic Coast for their green holidays. Start the lowland Caledonian Sleeper in the early evening from Weymouth too ... a mad idea, but then who knows what might happen in the coming decades?