Cheers for the advice.
Basically, it's the outer toe, on the inside of the front foot.
Swollen at both joints. Been like it for a good month and a half probably. Went down initially after a week or so rest, then first time out, he knocked a bunny out and ran it, caught it and came back bleeding from nail bed. Rested him for a couple more weeks, and had the same again. Now hes on an enforced 6 week ban from running (although he;s a f****r for trying to play with the pup in the house). . . . . but the vet recons it might be tendon damage or whatever. . . . .and may never come good enough