Well I spoke again with my Head Master yesterday and we came to an agreement outside the advice of the Union, but I felt the long term relationship was worth more than money in this case . I'm working from home on a three day contract until September and have had it written into the T&C's that I will return to full time as ad when it's "safe" to do so therefore having a "review" with him late summer. Massive weight off my shoulders and have safeguarded my full time contract. If things are still bad come September I will cross that bridge when we come to it but in the meantime I can work from home without any pressure. I'm lucky I can come to an agreement with my employer as I know many others aren't that lucky but I would advise others to talk to your employer or Union if you are worried about returning.