Thanks so much for your good wishes.
The vet has just rung. Toby has just woken up and i've got to ring back in an hour to see when he can come home. The house is so empty without him and I can't wait to hug him.
It was a large grass seed, it's been saved for me to see.
It has caused a puncture but the vet is hopeful all will heal without too much of a problem but until then great care has got to taken with his ear. Time will tell I suppose.
I'll post a pic of the evil seed later and thanks for your kind wishes everyone.