Yes — the GWR Night Riviera, which runs overnight between London Paddington and Penzance in Cornwall, has proper sleeping cabins as well as reclining seats. The cabins are berths in a private compartment with a bed, bedding, a washbasin and towels, and cabin guests get a complimentary light breakfast on board plus access to the First Class lounges and showers at Paddington, Truro and Penzance. Cabins are sold either as sole-occupancy or, for solo travellers, as a single berth, and there are twin-berth cabins for two people travelling together. There are no showers on the train itself — you use the lounge showers at the stations. The cheaper alternative to a cabin is a standard reclining seat, which is much less expensive but far less comfortable for sleeping. Cabin fares are dynamic and start from around £116, though promotional and single-berth prices are sometimes advertised lower; the exact price depends on your date, direction and how far ahead you book, so always confirm the live fare. The Night Riviera runs six nights a week with no Saturday-night departure, mirroring the Caledonian Sleeper's pattern.
Sources: gwr.com · seat61.com
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