I know there are some knowledgeable armourers on here so when i saw these photos i had taken from a visit to RAFM Hendon, I thought I would post them here
The caption said
General Purpose Bombs
A range of the RAF's standard bombs from the early war years
Designed for accurate delivery their low CWR (25-30%) meant that they did little significant damage
CWR ? C.... Weight Ratio?
more to come
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High Capacity Bomb
Thin skinned blast bomb with high CWR (70-75%) intended to flatten buildings over a wide area
Presumably the colour banding means it is inert......
No, although the display bomb is inert (or should be) it is correctly marked as a live bomb with the red band and green band and overall dark green finish.
The original overall colour pre-and early war for GP bombs was yellow, usually reproducing in colour photos as ochre but this was replaced by the dark green hence the different finishes in your first image of 260 and 1000 pound bombs on the Type C trolley with front and rear tool boxes missing.
Due to a shortage of MC bombs the GP series bombs continued to be produced and used throughout the war.