Can you help to identify these frames, bikes or parts?

Hello everyone, been waiting and watching all the good bicycle things that go on here! I'm hoping someone can maybe shed some light on this frame. I bought this a while ago from a retired guy who'd had it in his shed for years. As you can see, its looking a bit sorry for itself. But I'm thinking it could deserve a restoration.

It just seems quite a nice frame under all the surface rust. It appears to have a much later Holdsworth sticker, or, whats left of it, But for any experts out there, there does seem to be some distinguishable features that might give an idea of model, age or make.

Someone has already suggested it could be 1940's/50's

The rear forks seem very thin, they taper to about 5mm diameter at the point where they are brazed to the seat tube. I don't recall seeing forks attached to the main seat tube in this way before, although I'm no expert.

The lugs have some nice cut out details and there's a grease nipple  on the frame for the bottom bracket. It must be quite a few years since  grease nipples were used? The cable guides are brazed on.

The rear drop outs also seem a bit unusual to me and are spaced at 120mm.

Unfortunately, there's no head tube badge. Someone has had their own  name on the frame, 'Carole Jones' and painted their initials where the  headtube badge was.

There's an extensive site for Holdsworth but I can't find anything  like this one on there or google. A useful bit of information I did read  was that Holdsworth stamped the frame number on the fork blades tube as  well as the bottom bracket.

I stripped down the headset and the number on the fork tube is 242,  which seems a very short number as a frame number. I've cleaned the  paint off the bottom bracket and it does have a corresponding 242  stamped on it. There are also a couple of other numbers on the BB along  with British stamped in an arch. G5364 and what looks like SR23 which could be the frame size, it does measure 23" It also has the word 'CYCLO' stamped on the inside of the rear drop out lugs, didn't see it until I got some paint removed.

Anyone any ideas?

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