All About Pocket Knives

Thought I'd add a recently acquired knife to the pictures here, I have little idea about its age but would be interested to know what you guys think.
It's 3" closed and appears to have carbon steel blades and brass liners. It has "oil the joints" on the main blade tang which having done some reading on here might make it pre 1971?

I am far from knowledgeable on British knives but my guess is that your knife was made by Wostenholm either just before or soon after WW II.
I'll follow to see what those who know have to say.
kj