What about the chap at Belvoir International based in Grantham they have been very helpful to me in the past. Add is in last weeks H&H 01476 870177 or 07710016019 Richard Beever Hope he can help you at such short notice. Good luck
Might be a long shot as to availability but Blue Rose in Preston cover countrywide and were excellent in bringing our boy up to Cheshire from Hereford.
"Blue Rose
Tel: 01995 601819. Shares always available. Based Lancashire, National & International shipping."
When we bought Murph he had hunted twice a week so travelled regularly, by lorry. We actually saw him load himself on the lorry. However when we went to pick him up had a problem loading him on our trailer and he got gradually worse. We solved the problem by taking the partition out, he now loads absolutely fine and travels far better, though still would prefer a lorry, and trots up the ramp of our friends. Once you have got her home it might be worth taking partition out for a while, perhaps you could borrow a full breast bar to see if it works.