As an additional comment for people coming across this thread in future and anyone else it may help. Please make sure that your accessibility tools are high qu

As an additional comment for people coming across this thread in future and anyone else it may help. Please make sure that your accessibility tools are high quality, as you would when assessing any other dependency or service used in the development of your product. In particular, they should always assess the rendered DOM of any page, rather than a string of HTML. And if they make bold claims about the increased accessibility of your website once their recommendations are followed, or try to sell you some ridiculously cheap consultancy services, stay away. Whether you buy their consulting services or not, if they're too cheap, their tools probably are too. And if they tell you that automated testing is a route to complete usability for people with special needs, they're deluded.