Yes — you can take a bicycle on the Caledonian Sleeper, but you must reserve a space in advance and spaces are limited. Bike reservations are free, but there are only a handful of cycle spaces per train, so book yours as early as possible when you buy your ticket; turning up with a bike and no reservation risks being turned away. Standard non-folding bikes are carried in a dedicated storage area rather than in your room, so plan to be separated from your bike overnight. Arrive around 20 minutes before departure to give staff time to load and secure it. There are restrictions: the service cannot carry bike boxes, tandems, tricycles, electric scooters or electric unicycles, so check your bike qualifies before booking. Folding bikes stowed as luggage are generally the easiest option and don't take a reserved cycle space if folded and bagged. The GWR Night Riviera to Cornwall also carries cycles by reservation, with its own limited capacity, so book ahead there too. Because policies and equipment can change, and capacity is tight on popular routes like London–Fort William, always confirm the current bike rules and secure your reservation when you book rather than assuming space will be available on the day.
Sources: sleeper.scot · seat61.com
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