I've moved a few machine tools in my time. Smaller industrial lathes are fairly straightforward if you're on a flat concrete floor, but you have to be careful when jacking and packing them up to get them on and off skates or pallet trucks, because they tend to be top-heavy and rather easy to tip over sideways (I've seen the aftermath of such incidents - not good for the machine, usually). Moving a 3/4 ton lathe up a garden path is probably possible, but it's not something I'd like to do. There are specialist devices to get heavy loads up and down steps, but finding them won't be easy.
I think if I were to attempt this, I'd build a runway of scaffolding planks solidly blocked on wooden packing where necessary, and topped with steel plates. Keep the lathe level at all times, except when you're jacking it up and down. Hire a set of machine skates - you won't need big ones - and use three; two tied across at the headstock end, one at the tailstock end. Push the lathe along it's long axis only. Any attempt to push the lathe across it's long axis will tip it over (as will any instability in the ground or wooden packing). If a 3/4 ton lathe lands on you, you're in trouble, so take great care at all times. When you get to steps, keep the lathe level, and move it over a solid platform of timber. Once it's clear of the step, jack it down in about 3" to 4" steps one end at a time. Reverse procedure for up steps. A small Tirfor winch or similar can be useful for moving the machine; shackle it to a skate, not the machine, and chain the skates together so that they move as one.
Colchester lathes have a tapped hole in the middle of the bed near the headstock into which you screw an eyebolt, which makes lifting them relatively easy. Make sure you use the right eyebolt thread (the correct eyebolt is part of the machin's equipment, but most of them go walkies). Secure the saddle at the tailstock end, and make sure the tailstock is locked, or it'll fall off the end of the bed.
Alternatively, buy something you can carry in.
