The fireworks factory is at Kingsdown, Sittingbourne and not at Kingsdown Walmer! Both have Kingsdown Roads associated with them. The location is:
- Nat Grid: TQ 92707 59319
- Nearest Post Code: ME9 0QX
- Co-ords (WGS84): 51°18'01"N,000°45'47"E or 51.30037,0.76295
The house with the postbox is at:
- Address: 46 The Street, Newnham
- Nat Grid: TQ 95433 57670
- Nearest Post Code: ME9 0LL
- Co-ords (WGS84): 51°17'05"N,000°48'04"E or 51.28463,0.80110
Using GSV the green postbox looks like EIIR I think the red post box outside number 49 is a late model, so will also be EIIR, but GSV is too indistinct to be sure. The fact the the one outside number 46 is green, and also has the slot blocked off
may mean that it was bought as a private delivery box and installed by previous owners of the property.