Tom
I have a couple of 1+0 Joeby Crabs in my nursery. I would have to go and review how much scion there might be available this year (likely not much) but I do have it.
It came from Dave Matthews, so I can only be as reliable as Dave on its provenance.
I also have Tupstones (from MAN), but don't have Hagloe Crab.
We are assembling an eclectic mix of varieties in our orchard to complement the easily found commercial varieties that are more widely grown (dabinet, yarly, harry masters, etc etc) so you may be interested in other things we have.
Are you anywhere near the Welsh Border/Herefordshire?
One thing I am after is the true Ten Commandments (NOT Reinette Rouge Etoilee, which is quite widely found in orchards and often mistaken for ten commandments)
Tom