The main regulations controlling this subject are the Welfare Regulations 1992. These set out the minimum numbers of toilets per member of staff. If the business is a particularly dirty one, or hygiene standards are particularly high, such as food preparation, then the requirements may be greater.

The basic numbers are one toilet facility to five members of staff; and up to 15 staff, one additional facility. The toilet should be lockable and the washing facility must be contained within it. Hot and cold running water should be provided along with hand drying facilities. There should also be the relevant female facilities. They should also be clean!