Thanks Winston, and everyone for your kind words.
The situation is getting worse, my wife requested that I not enter the house when she wasn't there (even though she changed the locks my kids let me in). I thought it was a reasonable request so I complied. If I needed anything I telephoned and asked to come round. However, my wife has decided to get even nastier. I rang her yesterday so I could collect some software (which is mine and of no use to her) but she refused to either let me in the house or have it sent to me!
I have written to my solicitor to find out if she can do this, but of course he is on holiday at the moment.
My son came to see me this afternoon - he agrees with me that my wife is a 'fruitcake' (his description).
I just got a text from him - an elder has called (her brother) and is in the front room right now having a private conversation with my wife, probably about the letter. I would love to be a fly on that wall!
Thanks again everyone, it's been a really draining time but the support I receive here really helps.