Originally Posted by Big Block

after a quick look at the photos the bikes and parts (with a few exceptions such as the Chater Lea chainrings), are outside of the Classic Lightweight style and time period.
I would suggest two UK facebook groups
https://www.facebook.com/groups/vintagebicyclesuk
https://www.facebook.com/groups/vintagebicyclesuksales

as these bikes and parts would have a better fit to a number of members of those groups.
These are also specialist groups eg https://www.facebook.com/groups/themoultonbicycle/ and there may be other suggestions for specialists interests for the trade/postal bikes.
This may help in reducing the inventory.