Go to the NHS.
For long enough, the NHS avoided offering digital hearing aids and I will take some convincing that that that wasn't caused by lobbying by hearing aid manufacturers.
I just got my GP to refer me and it took ages to get an appointment, although that turned out to be a cock up rather than a long waiting list. Once that was sorted out, I got a quick appointment and good service. I made the point about the private part of the industry having an interest in restricting the availability to one of the medics I saw who explained that digital hearing aids of the type I was prescribed cost the NHS under £50 each and a private patient might pay a couple of grand (although that obviously covers a lot more in the way of checks than the basic cost of the hearing aids.)
My own hearing loss is worse in my right ear than my left. There is a fairly narrow band of sound - it seems to coincide with the noise of devices like electronic alarms - where my hearing is worst affected and in my right ear I am now profoundly deaf in respect of sound at that pitch. After my hearing had been tested, the chap doing it asked if I had been in the army because my hearing loss is characteristic of anybody who has used firearms. It's now some 40 years since I was trained in the use of firearms in the police.
My hearing aids do work pretty well with the proviso that if it's a noisy environment, the background noise is also magnified. They have a setting for use in those places displaying the icon of a big lug. (Press a tiny button on the hearing aid and it picks up that signal rather than noise.) They can be tiring to wear all the time. For some reason, mine have no on/off switch so the only way to turn them off to conserve the batteries is by opening them and risking the battery coming out. (Batteries are free on the NHS so the cost of replacements isn't a personal problem, but I don't like waste.)
A general problem is the high level of unnecessary noise in society: hearing aids just magnify that. Our wheelie-bins are marked CE 89 dB which I take to mean that the Common Market has rules on how much noise bins can make "Where you bin, man?

" "Shush." But supermarkets can make as much racket as they like.
(Mick F has posted faster than I did.)