This small pillbox appears most likely to be S0013698. Marked as removed in the EODBD overlay.
Brentford. Pillbox Just off North Circular (A406).
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This one is still extant and appears in good condition.
The picture shows a Pillbox built in 1940 and demolished in 1950. It was sited to defend a HAA Battery situated on […]
Pillboxes near Mildenhall, pictures from 1973
Once again it appears the pictures have not aged very well and there are no negatives to scan.