I have wireless headphones that plug into the headphone jack of the TV and I use subtitles so that I don't have to have the volume so loud that it overpowers other sounds. But that would depend on the level of hearing impairment of course.
// My local hospital were excellent, didn't trust local GPs somewhat antiquated equipment and they said my hearing was fine, so took myself of to walk in clinic at local hospital and came away with a hearing aid. //
TonyV - I'm assuming you've summarised for the sake of brevity, for that is not how one is issued with NHS hearing aids. One has to be referred to audiology where detailed tests are taken, then if aids are prescribed moulds are taken of the ear/s before a wait of usually several weeks while they are made for you.