Hi
@Tavy
Welcome to this forum. Many carers with great experience will be able to help, I'm sure.
Also, lots of info on the Alz Soc website for your to browse.
I don't know what area you are in, but in my area the Local Authority Adult Social Services produce a booklet called "Your Guide to Independent Living, Support and Care Services" which contains a lot of info about health and wellbeing, getting out and about, staying independent at home, managing health and support need, paying for care, etc plus useful tele numbers, websites, charities and local organisations and care companies' contact details. Check with your LA ASS to see if they do a similar one.
You can ask and you are entitled to receive from LA ASS a care assessment - a report to say what care they think your OH needs and a carer's assessment to state what help you need. In some areas there is a bit of a waiting list for these, and you may need to push.
You'll find lots of care companies online in your area. You can then choose which ones you want to investigate further about what they do, what their charges are, whether they can cope tith your OH's needs and whether they have sufficient staff to fit you in, or have a waiting list. Charges depend, obviously, on what you want to have done, how often, and area to area variations.
Yes, charges for care are means tested - that is your OH (not you) is means tested, by the LA. If you don't want this, then it is not compulsory, but a refusal to participate in a means test will be taken to me that your OH has assets in excess of the £23,250 limit and would be self funding. If your OH has assets that exceed £23,250 in value (excluding the property you live in together) then your OH would be liable to pay for her own care, as a self funder. All self funders are on their own to arrange and pay for such care as you choose. If your OH has assets that are valued at £14,000 or less, then the LA ASS are liable to pay for the care, and they choose the care company or care home (that will accept the level at which they will pay). If the assets' value is between £23,250 and £14,000 then your OH would have to contribute towards the care costs with the LA ASS.
That's a start!
Best wishes.