Time to put the thinking caps on...

The first query is: What is web accessibility? This is quite easy for you.

Web accessibility is the manner that websites are designed and developed so that they are accessible to all individuals using the internet. Accessible websites are built using technologies that enable users to access them from a wide range of user agents and devices notwithstanding the browsing technology used. They are also designed to encourage web traffic.

In the United Kingdom, it's unlawful to discriminate against people with disabilities, as outlined in the Disability Discrimination Act.

According to The Disability Rights Commission (DRC), there are over 10 million disabled people living in the UK, which is over 16% of the total UK population of 60.2 million.

So what are accessible websites? Basically, they are sites that:
1. Allow access for all Internet users through a wider range of user agents and devices
2. Are simpler to develop and maintain and provide the ability to make rapid, site-wide changes for styling and layout
3. Enhance usability for all users - pages load quicker and are more responsive
4. Raise search engine optimization and ranking potential
5. Reduce costs of bandwidth and hosting