The mill is not a heavy machine tool. Hiring a trailer will be cheaper and perfectly adequate. This cylindrical grinder was collected from more than a 100 miles away and involved a trip around the M25:

If a trailer with a drop down tailgate is hired then the mill can simply be rolled onto the trailer. This repetition lathe is sitting on a pallet truck:

I can move up to a ton by myself, above that I need to use professionals.
Julie
Honestly, I feel this advice may be not giving the OP quite as much an idea of the potential risks involved.
Yes, this mill is not some multi-ton behemoth, it’s not even as massy as a Bridgeport. However, if it tips, there are going to be hurt feelings at best.
Moving a machine tool (excepting human-liftable little-uns; and even those sometimes), is a serious endeavour and not to be taken lightly or dismissed as ‘”Eh, any fool can do it”.
Unless the OP has experience rigging relatively heavy machines for movement to a vehicle, getting up a ramp onto a trailer, and driving a car with such a loaded trailer, I’d recommend a van, preferably with a tail-lift.
Obviously moving machine tools should ideally not be done solo. Someone with whom the OP knows they communicate well is best. Before any part of the move, thought needs to be applied and at the very least a plan worked out. Both parties need to have a constant eye on for upcoming troubles.
Here would be my approach:
Take as much off the ‘top’ as you can. Off with the head!
Take an engine hoist with lifting straps, a pallet in decent condition, lots of good ratchet straps, and maybe hire a pallet truck. Get the mill on to the pallet, and strap it to the pallet like billy-o.
If you can, use a pallet truck to get the palleted mill on to the tail lift, if not, use the engine hoist to do the same. Again, use either the hoist or pallet chuck to get the palleted mill as close to the cab of the van as you can. Use more straps to get the palleted mill securely strapped down to the appropriate points in the cargo area of the van.
The pallet will give the mill a wider base obviously, potentially make it easier to move, and provide more strapping points to prevent sliding in the van.
Sounds like a lot of bother for what is, in the grand scheme of machine tools, not particularly large mill, but maybe this will add some context to my perspective:
I remember my father coming home from work in the 1970’s in a bit of an emotional state (a very rare occurrence), and it transpired, they’d been moving a dual-spindle pillar drill from one workshop to another, and it had tipped and fallen on one of the lads on the way to the Luton van. The lad survived but ended up in a wheelchair. These were not amateurs; these were experienced people, used to moving heavy machine tools and this was not an especially hefty machine.
Anyone who has ever had the privilege of watching professional machine movers work, will see that they’re relaxed, efficient, but very very watchful and they think before they do things. These people have learned from mistakes (hopefully early on in their careers, where the mistakes they made didn’t have particularly serious consequences), and take their work rather seriously. They also have a rather gallows sense of humour! 😀