Rear End identification

[Garry Easter]

Hi,

We are trying to identify this back end which from the Maroon I think is a BSA? Comes from us clearing a workshop, container and small barn from the late Denny Barber, so we would like it to go to a good home too (once we can list it with a tad of info!). Hope the photo attachments are okay and thanks in advance for shedding any light to the clueless!

Thanks,
Garry & Kate

[JulianS]

Looks like C12 250cc.

[Garry Easter]

Thanks! Much appreciated!