Beachbum, I think that's the Hollingbourne water tower, junction of Hollingbourne Hill and Ringlestone Road. If so it is located at:
- Nat Grid: TQ 85627 56425
- Nearest Post Code: ME17 1QJ
- Co-ords (WGS84) 51°16'36"N,000°39'36"E or 51.2767,0.6600
I've found another one in Herne Bay, surrounded by Mickleburgh Hill, Dence Park and Lavender Grove :
- Nat Grid: TR 18699 67901
- Nearest Post Code: CT6 6FG
- Co-ords (WGS84): 51°22'05",001°08'26"E or 51.36804,1.14050