Content must be delivered in formats that are friendly for all users. With visuals, we need to make sure that there is a non-visual option for visually-impaired users. Likewise, for video and audio, we need to provide captioning for visually-impaired and hearing-impaired users. Usually this comes in the form of closed captioning.
Audio (podcasts) and video will not be posted on willistowerswatson.com unless the appropriate closed captioning is found within the video / audio file. When budgeting for and producing media content, consider this a key (non-optional) requirement.
Video and podcast players should be accessible and easily navigated using a screen reader / keyboard tabbing.