Benington Lordship Gardens
http://beningtonlordship.co.uk/
Chenies Manor House & Garden
https://www.cheniesmanorhouse.co.uk/
Elia Cottage Garden
https://ngs.org.uk/view-garden/34171/
Hatfield House Gardens
https://www.hatfield-house.co.uk/
Knebworth House Gardens
https://www.knebworthhouse.com/
Pembroke Farm Gardens
http://www.pembrokefarmgarden.co.uk/