Posted: 08/06/2013 at 21:10
ThunderB, you are not very far north, I am in Norfolk and have lost several Bays over the last few years, partly because of the cold, partly there is some fungas/disease that is attacking Bays so I have been told. My neighbours thought that they had lost a big Bay, but eventually it revived.
I agree with nutcutlet, they do not need ericaaceous compost, in fact that may be stressing it. Give it some time and it may recover.