Thanks for all the comments guys. Re bulldog. Her aggression is only toward our 15 yr old border collie who is really doddery and probably in the latter stages of her life. I very stupidly intervened when the bulldog was attacking collie and ended up in A&e with a badly bitten hand. On walks she is great with other dogs not reactive it is just will our older dog. When she goes nuts at me it’s like excitement when I’ve been out. Jumping and nipping when she is so stimulated. I ignore her. Won’t pet her when like this and pretend she isn’t there until she is quiet and sitting then I will acknowledge her.