The Children's Services dept of your county council should be supporting you. They might be able to suggest sources of support, perhaps from a Family Support Worker or at your local Children's Centre. If you couldn't continue to care for the children, they might have to provide foster care, and they will certainly try to avoid this, as it's expensive and disruptive. CAB are another source of free advice, and should be able to put you right on certain benefit entitlements etc, as well as nursery and pre-school provision.
It's worth looking into the staus of "kinship carers". If the children are to live with you long-term, getting recognised as kinship carers effectively means that you become foster parents and get an allowance for this. It's not widely publicised, as it costs the local authority money, but it might be worth asking about.
Elderly fellow gran has become loudly racist
Soop's warm and welcoming kitchen for kindly folk.
4 Years On…..Health-wise, Has Anything Changed?
Well Labour’s “patriotism” didn’t last very long, did it? 🇬🇧