Most of the manufacturer’s covers are made of metal (one cover was found with parts of it overlaid in concrete ) and are square , rectangular , round , or octagonal .
No colored or gilded covers were found for this manufacturer. City emblems also do not appear on the manufacturer’s covers.
In general, the intended use of the cover does not appear, although in some cases it is specified (such as drainage covers ). The year of manufacture usually does not appear on the cover.
Standards The manufacturer’s covers do not bear standard marks.
Typical Covers Square or round drainage covers are typical for this manufacturer. Many covers can also be found with a diamond-pattern background .
Additional types of covers can be seen at the bottom of this page.
(one cover was found with parts of it overlaid in concrete 
) and are square 
, rectangular 
, round 
, or octagonal 
). 
or round 
drainage covers are typical for this manufacturer. Many covers can also be found with a diamond-pattern background 
0 are best covers)
Possible Worlds Ltd. 
© 2017-2025
Click to the map showing all the covers made by J Gibb
Drainage (5)
Unknown (4)
Gas, Fuel, Heating (1)
United Kingdom (10)
London (9)
Abbots Langley (1)
City of Westminster (2)
