The Public Health (Control of Diseases) Act 1984
Personal Protective Equipment (PPE) Regulations 1992
Controlled Waste Regulations 1992 (includes Clinical Waste)
Management of Health and Safety at Work Regulations 1999
Food Safety Act 1990 and the Food Safety Act (General Food Hygiene) Regulations 1995.
For 2.2 I suggest you have a look at your workplace for all relevant policies, guidelines, etc (including requirements for staff training.)