Chris you'll get a small fraction of the value if you let some clearance merchant take it all away for an easy profit.
The grey Myford Tri-Lever lathe has a gearbox on it, the gearbox alone is worth hundreds so don't let that go cheap. Gearbox models regularly seell for better than £1000 much more if there are steadies and chucks.
The blue shaper looks clean and tidy from what little is shown, there's a few hundred there. Usually they come without the vice because they lso fetch good money separately so don't let someone bid you silly on that either.
I can't see enough of the smaller black lathe to identify it but if it's complete and working there's a couple of hundred at least.
Bench drill has a couple of vices with it, grinder looks like a quality item.
The model on the bench and the one on the top shelf look nicely made but someone else will have to identify those and offer a value on them.
I would say that individually the items I've mentioned will get you comfortably north of £2k. If you take some better pictures and see what attachments come with the larger items you might do much better. Just looking around the pics, the well-used but well kept machines, nicely insulated workshop, home-made powered cross feed on the lathe your dad must really have loved his time in there. You should make sure you do him justice by getting a decent price for his stuff IMO.