Joined: 27 Apr. 2001
From: Galashiels Selkirkshire United Kingdom
I don't think there's any specific legislation preventing you from sleeping in a motorhome in a layby overnight - unless there is a specific bylaw prohibiting it in that area.
Obviously you'd need to make sure you weren't causing an obstruction, either to the road or to a field access - but if you choose your spot sensibly, you ought to be ok for a single night.
More information on this page here: Motorhome FAQs
Enjoy your holiday!