The University Safety Office provide Health and Safety training courses to postgraduate researchers and research staff, many of which are free of charge.
Have a look at the website for a full list of courses. This could be useful to you in your current role, especially if you deal with hazardous materials or equipment or you have responsibilities for any aspect of lab management. It could also add to your skills and knowledge and show an interest in this area if you are considering it as a possible future career path. Have a look at the Careers Service website for more information about jobs in this field.