@CelticPromise
I am in the same position as you, DH supports me, i rang to ask about this, they advised to put that he makes payments on my behalf and that he supports me, i also added he does not pay me an allowance in a separate letter stating i do not claim benefit of any kind and a do not earn over the threshold as i do not work.
I did however use the form with a statement that i did not agree to the sharing of my information, all i filled in was NI no, DD to a dormant bank account so its easy to obtain evidence should they decide to claim money, basic financials, did not fill in credit cards etc none of their beeswax.
None of my savings are in my sole name, was also advise they didn't want anything in joint names, one adviser asked how much i owed on credit cards, when i queried why it was classed as income, i did bite my tongue and said i wasn't sure!! Christ, next they want my blood group and a pint of it to make sure, they would probably sell that as well!
Hope that helps, as you can see we are all trying different things.