Hello everyone!
I was wondering if anyone could help me identify this Carlton frame I inherited. I am running it as a single speed at the moment and it is doing me proud!

(original Weinmann centre pull brakes)
From the research I've done so far, I think it could be a Continental or a Corsa. Details as follow:
Frame Number: WL5002103
Was built in Worksop Carlton works in August 1975 and features Crespera Lugs according to:
http://www.carltoncycles.me.uk/mybik...ontinental.htm
Seatpost: 25.4mm
65cm frame.
I am struggling to find out what it is made from. Does anyone know, and can anyone correct any of my details?
Many thanks in advance!