Spot on JohnFilmer - I like your reference to Thunderbird 3 - I hadn't noticed it before.
A good place for an afternoon visit. All connected together, you have Bush Ruff Country Park with lake, The formal Russel Gardens and large pond, and then Kearsney Abbey Gardens with tea room and lakes. The remains of the mill are in the trees at the bottom of Kearsney Gardens.
A stream runs down the Alkham Valley and joins the River Dour at Kearsney Abbey. I believe at one time it powered around ten mills on its journey down into Dover. Its mouth is in the inner harbour near the big outlet center.
Over to you JohnFilmer