I am able, because this is not my problem, to see both sides here. I fully understand why you both feel hard done to, having saved for your old age all your lives and now being faced witht the prospect of savings disappearing into the maw of the Inland Revenue.
So make a list of the repairs that need to be done to the house and get estimates from two or three reliable tradesmen for the repairs.
Then place the list and the most favourable estimate in front of your DH and say bluntly that there is no sense in saving money that is just going to disappear in the form of taxes and that you think it would be wiser to put your house into a reasonable state of repair.
And perhaps when this is done, consider selling it, and moving into something smaller and easier to run.
Unless either you or he really need to be in a care home, I very much doubt you would enjoy living in one, but if it is necessary find out if you can find one and use your savings to pay for care there, then sell the house for what it will fettch even in a state of bad repair.
Make it clear to your husband that you do understand why he feels badly treated by new taxes, unfortunately both you and he have stuck to the values we were brought up with and have wanted to be able to pay your way to the bitter end.
'Most people stopped thinking that way sometime around 1980, assuming that we will not be left to die destitute in the street if we have no savings.
Use your money, either on the house, or on moving, or on simply on anything you will both enjoy and that you cannot be taxed on.
We come empty handed into the world with clenched fists ready to grab hold, we leave it empty handed with flat hands laid on our breast or at our sides. And it is certain that we can take nothing with us. So enjoy your savings.