There lies the problem. Trevor Ermel is in his seventies and retired. He lives in Whitley Bay, not far from Tynemouth where I live. But despite considerable effort, I've been unable to contact him. As I've already said, David Hey has my sympathy. He's done some wonderful work, second to none IMHO but he can't be contacted either. so, correctly, it has to go.
A few people have seen it and it does demonstrate that black fives did make it into Tyneside, the photo and text is : - http://www.davidheyscollection.com/page69.htm
Hal