Felbrigg Hall, Gardens and Estate - (NT) - "The rolling landscape park with a lake, 211 hectares (520 acres) of woods and waymarked trails is a great place to explore nature and wildlife on this bountiful estate. With buggy friendly surfaces on main visitor routes, families can enjoy a relaxing day out." "There is designated disabled parking at the front of the main car park  Accessible toilet available  All-weather path through the woods" - from the National Trust website

also see the Walks For All walk leaflet from the Norfolk Coast Partership website