UK Women please help!?

Rose • Fiancée & Mommy

I'm pregnant with my first baby and currently work full time but come February will be on maternity leave (£139.58 per week)

My partner has just gone self employed and has an 'okay' income but we are a little concerned about what we can afford in terms of our rent and cars etc.

My question is in; the UK what can you claim on top of maternity pay if you're employed and your partner is self employed?

Any advice or help will be much appreciated.