I did have some very quick legal advice. They just said 'It's all bull.. and to offer to go to mediation'. However, that could make a D process quicker and make R with W even worse. If W wants a D then she can make the effort to do it.

However, since then, I found out W is hiding money from D and now she knows that I know about it. I know she had a lot in Jan 2018 and she will have to show 12 months of accounts. Therefore, I will wait about 2 to 3 months and then I may have to look to D her to help ensure that I get a fair deal. That is assuming W doesn't deliver D papers before then which she might well do.