I don't think you have to register your home as a business as such, but in some areas you do require a licence from your local authority if you offer massage. I think this is to legitimise what you do, otherwise they might think you are running a massage parlour:lol:
In addition, some local authorities require you to have a licence if you do electrolysis and / or ear piercing.
With regard to expenses, definitely keep a record of everything you buy. You will have capital expenses such as your couch and other 'big' equipment, and stock, i.e products etc.
I believe you can also claim a percentage of your household bills, for instance if you have a 5-roomed house and you use one room, you can claim one fifth.
Definitely find yourself an accountant though, as their fee will probably be more than covered by the money they save you.:hug: