Personally I find a thick indoor housecoat more effective than a hoodie. When I was a child and lived in an absolutely freezing place (ice on the inside windows, open unblocked fireplace without any fire so wind just whirled round and the old sashes rattled and rattled) I used to sit and do my homework inside a sleeping bag wearing hat, gloves, etc. Have you tried any heat or gel pads recommended for chemo patients – think you need to be careful that they aren't too hot given skin sensitivities, but at the right temperature they can help with both pain and heat needs. Check with your chemo team. There's generalised government help with energy costs and cancer can make people eligible for Personal Independence Payment (it gets assessed on an individual basis and takes into count both cancer and other health conditions you may have) then you could perhaps get more energy help by virtue of claiming that. Am not sure about anything else but think it's worthwhile your getting in touch with the utility companies so that you are on their priority list for help (if power cut etc) so double-check with them if any other help beyond priority list when you call up. It can be important to get onto priority lists – any vulnerable adult, household with young children, special health needs can usually get onto them – so that you are not cut off longer than necessary in the event of a systems failure, blackout etc. With things like water there is a discount for any health conditions, I believe, where there is a need to use extra water. But not everyone finds it works out cheaper. It depends on your individual circumstance. Good luck!