Diva
No matter what field you are in, you are contracted to perform a task so all the HSE regs come into place be it a one-person band or you employ staff.
If one uses the customers cleaning agents you will need data sheets on products, not that you will get one from Tesco’s own brand, regarding customers equipment I would use my own and have it pat tested and documented.
There are more qualified people in this field than I but I would say domestic = commercial no difference.
Risk assessment I would also look at the flip side of this what is breakable and it worth if you know.
Good luck in you venture, just make sure you x the t’s and dot the I’s as there is always a croc to bite you
Len