We have just been on a five day break in Lincolnshire and 'all things mini' was pretty much banned.... I can attest that going 'cold turkey' like this does make you a bit twitchy.
On our way home we visited Nostell Priory, an NT place near Wakefield, for lunch and a bit of a mooch in the sun. I had a sore foot so declined the hike round the lake with my companions and retired to the house for a tour of that. Guess what they have an eighteenth century Dolls house.
This has led me to seek out other doll's houses in NT properties - I'll let you know