Accessibility legislation relevant to assessment

Is it not illegal not to make assessment accessible?
Current legislation, such as SENDA (Special Educational Needs and Disabilities Act), means that it is illegal for disabled students to be treated less favourably than other students, and that reasonable adjustments must be made to lessen any major disadvantages they face. This includes ensuring that students have equivalent access to computer-based assessment.

Therefore, assessment authors should ensure that assessment content is accessible, and software developers should ensure that the software itself is accessible.