Bought this last night off of ebay, but can find little info about Swift on the internet.
I've searched BF and Old Roads, but find nothing.
Seller called it a 'Swift Cheylesmore' and the age is his estimate.
All I know for sure is that it was made in Coventry, England, and Swift also made cars pre WW2, in the 20s at least. They definitely did not make bicycles after 1939.
Cheylesmore is a suburb of Coventry, and, I presume, where the factory was.
The chain-wheel is the distinctive feature for me.
Apologies for the pics, poor quality ebay stuff, but will post high definition ones when I actually collect it Wednesday.
I'm sure (I bet!) there is someone on BF who can tell me more....