Not necessarily, but probably!

It is defenatly a 4 shaft engine as you can see the gears on the crank.

Yes, sorry Steve, I had a good look at it on the day, I meant the age of the thing. I thought Marshalls were building four shafters by that time if you wanted one but I'm not certain.

Is the Paxman still there? or if not do anyone know where it is? As I would like to look at some of the oilers on it! for the Paxman I am working on. if anyone can help I would be greatfull if someone can help here! thanks.

The Ruston Proctor in the initial post is listed as U/I, which I assume means unidentified? I can see an oval plate on the side of the cylinder though - was there no number on this??