The supporting information section is your opportunity to sell yourself therefore make sure you use it to your advantage. You can include any information here that has not been covered elsewhere on the form. Demonstrate why you would be suitable and how you meet the person specification. You need to convince the recruiter that you have the required skills, knowledge and experience and that they should be inviting you for an interview.

You can include, among other things, details about:

your duties and responsibilities;
your skills, knowledge and/or experience which is relevant to the post;
identify any employment gaps;
voluntary work you have accomplished;
research, publication and/or presentation experience.