River S.
Google
Wonderful experience, perfect for railfans or young children. Friendly folks all around, very eager to explain the dos & don‘ts of riding, and lots of recommendations for local experiences.
Price is fair & you have the opportunity to visit Walsingham. The flexibility to come back makes it ideal to take a ride, have a pub lunch/cream tea, then come back. Especially wonderful in good weather.
Sidenotes - if you suffer from hayfever/pollen related allergies, remember to take an antihistamine. Lots of lovely plantlife & flowers, but can be irritating to eyes/nose if you‘re not careful. & for open carriages, remember sunscreen/cover skin in excessive sunny weather!