Hi, Andy. Is this Cazza's Andy??? My son had the facial twitch last fall, under his eye and in the corner of his mouth on one side. He said he could hear it, and I could see it at times when he was really tired or overheated. The doc prescribed Neurontin, in a very small dosage to be increased over time. He also told us that it would go away on it's own if we left it alone, but since it was painful for my son and it was bothering him, we elected to try the Neurontin. I am not sure what did it, but the twitch did go away within a couple of weeks after starting the medication. Is Neurontin available in the UK? That is one that has been around awhile, so it is possible that it is.
Anyway, if you are Cazza's Andy, tell her I said hello, and regardless, take care of yourself and let us know how you come out with this.