OK, union joined! I should have someone to fight my corner now. I'm going to try to keep well away from HV, It's not my back ground, I don't like it, I was never asked if I wanted to do it and I'm not confident or competent in it. They need to look at employing a professional as this is likely to be an ongoing thing.
I came within a hair of giving the HSE an anonymous tip off once before over another matter.
Edit. Found out my training certificate, is says 'Authorised Person High Voltage-operation & Safety', no idea why everyone is calling me an SAP!