In listenting to Steve Wright on the radio last week his guest (can't remember the name) spoke of a web site called Grants.
Go via google and have a look - apparently there is a lot of money NOT being used up, and you may well be able to get something to help you along.
Also any charities linked by family relations, ie SSAFA for army and airforce, whether from your parent/s if no longer living. British Legion etc; however this may be more appropriate for an octogenarian as I got a lot of help for my father: a mobility schooter, insurance for it, plus a low storage shed, an extra donation quarterly, over and above his meagre pension (we lived abroad for many many years!). This helps him over his State pension now, of �19.80 a week, whilst the remainder goes towards his Residential Home fees. (The State picks up the balance.)
I'd try 'Grants' first. MazC