You also need to ensure your classes are accessible to disabled people, as you would be a provider of services under the law ( Part 3 of The Equality Act 2010 ) . That means your venue where you do the workshops may need to be accessible too, and not just for wheelchair-users, but provision for deaf and hearing- impaired people, blind people, cognitive-impairments, etc.
There are a range of portable hearing-loops available, and even one on a clipboard if you move around a lot, ( Ideal for guides ), which has about a metre or so pick-up area for persons with hearing aids.
The portable loops also display the ‘ear sign’, which indicates the amplification facility is available. The hearing-loop facility is called an ‘auxiliary aid’.
No one is saying you must have this now, this minute, but it is possible for a disabled person with a hearing-impairment to make a claim against a provider of services in some cases, if you are communicating with others on the course, and you don’t make reasonable adjustments to communicate with them too.
If you hire a hall or rooms in a venue always check the facilities are accessible. No point having a booked room for your course on an upper floor if there is no lift or the lift isn’t working, as mobility-impaired persons would have difficulty. Try to have a ground floor room or area, which simplifies matters.
A working, wheelchair-accessible toilet is useful too in the venue, but not saying that you have to make this in your home, (if that is where you will teach) - it all depends on how you run the workshops, whether you offer tuition at the customer’s home, and other factors.
Many people lip-read, so you need to be well-positioned so your lips and face is in the light when speaking. That costs nothing. Don’t assume that if a person is not wearing a hearing aid , that they don’t have a degree of hearing impairment.
Worth sending a questionnaire out to people before they start the course, to see if they have any special needs. You may need a large- print version and ideally, an audio version of that too.
The ECHR has publications on aspects of the law, and free downloadable
guidance for small businesses.
Best of luck !