Ok got you with the divorce status. UK sounds very lengthy and process driven. Here in Oz its been much more streamilined.
With the property settlement, don't second guess getting legal advice, just do it. No one here can tell you if 50/50 is good, and if they do, don't listen.
Get some advice privately on your range of entitlements to the property pool between you and your W. Don't tell her, just go and do it. Only a lawyer can advise you what you may be entitled to. If the advice is in the range of 50/50, then you're golden. If not, you can think about whether you renegotiate.
Anything other than legal advice is guesswork and speculation.
Again, make it legally binding once agreement is reached. Relying on good faith that W won't chase you for more in future is absolute folly, and I'm actually surprised the UK has that option for an informal non binding written agreement.
I'm not going to mention it again, but can you tell how serious I am about you getting in and seeing a lawyer?
You'll need to pay obviously for legal advice and assistance. Think of it as an investment in your future security and peace of mind. If you're not happy or satisfied with your lawyer after that, get a second opinion form another one.
I'm sorry too about the divorce progressing and how you're feeling about that mate. Think of it as your ticket to becoming AMOAFWL. Steve said it right in that the D is a step in the process, whihc is winning your W's heart back.
Now, after you've called your L and schedueld an appt, go out and smash those castanets again and listen to New Rose by the Damned whilst getting pumped in the gym. Keep us posted with how skinny slob Dan is becoming Iron Man Dan!
Me: early 40's XW: nearly 50 T: 15 M: 5 BD: Jan 19 S:10 SS: 22 SD: 24