Spousal Maint query

Would Party A be likely to get any spousal maintenance in the following scenario?

Party A
Does not have the child or any visitation rights currently
Earns £23k PA (before tax and so on)
Receives no benefits
Would be paying approx £200 child Maint to Party B

Party B
Receives child benefits
Lives alone with 2 Children(only 1 to party A)
Earns over £30k PA
Has a Mortgage
Receives £200 PCM Child Maint
Recieves undisclosed income from parents for legal help and other needs.

With party B having the marital home and the children occupying the property as well as an additional income from CM and parents would there likely be any spousal maint payable or would it be pointless looking further into it as the disparity between incomes isn''t officially a lot but when taking into account undocumented income from parents would this help as they wouldn''t be able to keep their flamboyant lifestyle without these payments but would merely have to live like the rest of us?

Hi,
To be honest, since B has 2 children to care for I''d expect A to have no chance of Spousal Maintenance.

LB

Whats the net income over 30k could be anything, take off pensions tax and NI.

Not sure after pensions but know its circa £34k.

Being a teacher i think her pension contribution may be around £209PCM
NI would be about £250
Tax would be circa £370

These are rough workings.