From the Archaelogy Data Service Defence of Britain Data Archive, the pillbox next to the running track on the News of the World Sports ground can be seen, although there are no further details about it.
From this map, the size of the pillbox was measured at 71 feet by 84 feet.
Annoyingly, the entry on the Archaeology Database shows it as being in New Malden.
The Defence of Britain
|Location: New Malden
Description: 03/1992 Pillbox, no specification.
|Source: Corrected Defence of Britain Records Click here for more details|