A Summary of Hearing aid manufacturers in the UK

Basically, there is far less choice than there used to be... 7!
Those left are
WIDEX/PCWERTH,
SIEMENS,
OTICON,
STARKEY,
GN RESOUND and
PHONAK
UNITRON

Any others mentioned tend to be owned by one of the big six (examples are BERNAFON, HANSATON). There are a couple of smaller sized suppliers also (for instance - Puretone and Sonic Innovations, who have just closed their plant in the UK).
Some retailers do rebrand products to disguise their source, but this is not widespread yet

Some consumer magazines and information leaflets imply a greater choice, but this often includes US brands which are not available here. These magazines will commonly be offered through direct advertising by hearing aid companies.