"met with a really helpful person at the job centre" tends to be an oxymoron!
They are NOT on your side, their job is to keep payouts to a minimum.
Where are you roughly?
Have you checked online calculators?
https://www.entitledto.co.uk
https://www.turn2us.org.uk
They do tend to over estimate slightly but they do tell you which benefits/elements of uc you would likely be entitled to.
Have you arranged your council tax single person discount?
If it's just you you're not entitled to a 2 bed property.
While I sympathise and admire you for moving on re ex I think you need to be realistic.
You need to find affordable accommodation as in accommodation covered by what you're entitled to on your local housing allowance level, even if that means moving slightly out of area. You say you've no support anyway and no job so what's tying you to your current area?
Renting out spare room would probably be against your tenancy agreement, on legacy benefits you only get to keep £20 per week of any money from a lodger plus in your case even that would likely would annul your council tax discount which would likely mean you were worse off. On UC you keep the money but the "bedroom tax" would still apply
https://www.homeprotect.co.uk/lodgers-insurance/taking-in-a-lodger
"The reason I can't work is to do with mental rather than physical health." Mental v physical health isn't the issue, it's how it impacts you on a daily basis. And I'm afraid it's not just up to your dr any more few Drs are really conversant with how it works now.
You need expert mental health claim support
If you're in England and Wales there's "mind" who can signpost you to local agencies that can support and help.
Personally I've not find cab particularly helpful.
Most local councils have a "welfare support service" who help claimants, I've found they're most up to date on the rules.
DO NOT attempt to complete the forms yourself OR with dwp alone.
They're a nightmare to navigate and a mistake can cost dearly.
Find out if your area is legacy (old) benefits in which case you would likely be eligible to claim ESA (employment and support allowance), housing benefit, council tax benefit OR universal credit (but you may still be eligible to make a claim new style ESA) but you would be eligible for various elements in addition to the basic because of your ill health.
Pip is a non means tested benefit to cover the additional costs incurred by your illness/disability. It's separate to the benefits in the previous paragraph.
It's complicated!
Which is WHY you MUST get EXPERT support to claim.
"you are unlikely to get PIP because that is based on what help you need from other people to do various things." Rubbish! If you don't know what you're talking about then say nowt!
"Then, even if you do find a place, you'll need to pay the agent's fees, a deposit and the first month's rent (as benefits are paid in arrears AFAIK.)" not everywhere works like this and from next month fees are illegal.
It is hard finding landlords willing to take benefits recipients but not impossible, there's also social housing - I've found shelter very helpful at times op
"My local council doesn't offer this. It's outsourced to other companies" doesn't mean you can't apply, most social housing is through housing associations rather than councils now. Different HA's have different processes, mine has a "points" system.
JemimaPDuck please do tell if these countries where the sick are forced to work - what happens to those who can't?!
"and I would second going to CAB as they should have the most up-to-date information on what you can do or expect with benefits." 😂 sorry but my experience and that of those I'm close to has been that's far from true!
Goose1964 are you in England and Wales? Rules are different in Scotland because council tax includes water rates which everyone has to pay. Also depends on the household income - if there's a working adult in the house then council tax still chargeable.
"The reason I’m trying to clarify it for you here is that I found the UC people and job coaches gave me a lot of wrong information about the Limited Capacity to Work benefit premium, and it was really difficult to claim because I kept being told it didn’t even exist! I was also told I couldn’t claim it as it was the same as PiP, or that I should claim Pip instead as I was ‘only on DLA’ (utter nonsense!) and basically, it was an utter chaotic nightmare" doesn't surprise me in the least! It's shocking the "advice" they're getting away with giving!
"but I’m afraid one of the people did deliberately do this, and admitted she had been told to stop as many people as possible getting referred on to the Capacity to work assessment" doesn't surprise me either. Then there's all the lying assessors are doing!
In summary:
Speak to
Welfare support service at council
Shelter
Mind
DON'T try and complete the benefits forms yourself
Get on social housing waiting lists ASAP
Contact your children - I'm sure as soon as you explain they'll want to help, they may even have suspected/known anyway but couldn't help until you were ready to get out of the situation.
You are in a tough spot no doubt but you do have options.