Well Jess has had his vet visit and the vet thinks it was either acne or a scratch from Milo thats not heal properly, she picked the scab off and told us to keep an eye on it, if its no better to pop him back for antibiotics. Was trying to look at it this morning but Jess was having none of it, (think he thought he was going back to the vets). I'm just thankful it wasn't anything sinister.