We're off to Truro from Paddington on Thursday. Can anyone tell me if there are power supplies to power up my laptop in standard carriages. Would appreciate some info.
New to this. Please accept apologies for the position of this query. Couldn't find where to post a new thread!

The power is provided from the traction unit, either from the generator or via taps in the secondary winding of the transformer.One assumes the 240v feed is on a single circuit.
So I'm puzzled by the sign affixed to the outlet under the luggage stowage facility stating that it is not for use by the general public and claiming that the current is "variable" and that "damage" can occur to appliances attached to it?