Can I take his financial disclosure to a solicitor

[Catsruledogsdroolokay]

Hello
We are planning on doing financial mediation (doing child arrangements first and mediator said if we can’t decide on that then no chance we will decide in FA!)
Anyway STBEXH earns 10x what I do (300K+)
I gave up job and career for him
Didn’t work for 18 months and last 6 years I’ve been part time
Married 17 years and together 25
Two kids at primary school
I have a serious illness

He is saying 50:50 split and acting like that is generous
How do I know what I am entitled too?
If we do mediation financial disclosure rather than Form E can I take the spreadsheets to a solicitor to look over and see what they think they could negotiate?
Or does it have to be Form E?
Do I need his permission to share with a solicitor or is the fact he is sharing them with me enough?

50:50 might be ok if there are lots of assets

or it might not be

if you have a rough idea of assets your solicitor will be able to advise on range of outcomes to negotiate on

one thing to consider is a court won’t give you all the liquid assets while expecting him to start again, rebuild and take on all the risk of maintaining earnings etc. you are in the realms of spousal maintenance territory but again that comes with a risk

I went to a solicitor with a rough idea of his earnings, savings, car and bike values, I also knew he had several pensions. They were able to give me a basic idea of what I should be asking for/what the judge is likely to sign off. That can be done before Form E. Consider Form E as dotting the I's and crossing the T's kind of paperwork. It just officially confirms the figures.

If he's offering you 50:50 with that level of income, you'll almost certainly be entitled to more than 50% (unless you've got millions in the bank and house), so I'd definitely see a solicitor and insist on exchange of Forms E before mediation. No point mediating without having a clear picture of what you're negotiating over. There's a reason why he's trying to push it through mediation without disclosure (if he is), and it's not to ensure that you get what you're entitled to.