WebAIM Web Accessibility for Designers infographic / poster: https://webaim.org/resources/designers/
BBC GEL Guidelines – How to design for accessibility: https://www.bbc.co.uk/gel/guidelines/how-to-design-for-accessibility
Writing and designing for accessibility – three short videos by Jon Gibbins with advice and tips for creating more accessible content: https://www.youtube.com/playlist?list=PL5K0gV_0ebpFledZ5f4dZqULYPTm9KOjx
Inclusive Design Principles, including illustrated posters: https://inclusivedesignprinciples.org/ https://www.tpgi.com/inclusive-design-posters-from-barclays/
UK Home Office – Dos and don'ts on designing for accessibility, including illustrated posters: https://accessibility.blog.gov.uk/2016/09/02/dos-and-donts-on-designing-for-accessibility/ https://github.com/UKHomeOffice/posters/tree/master/accessibility
BBC Mobile Accessibility Guidelines: https://www.bbc.co.uk/accessibility/forproducts/guides/mobile/
Android – Build more accessible apps: https://developer.android.com/guide/topics/ui/accessibility
Material Design Best Practices – Design your app to support accessibility needs: https://material.io/design/usability/accessibility.html