For all UK based businesses that have a web site selling or promoting products and services, UK laws apply. Web sites hosted in another country are still covered by UK law if the business is physically inside the UK. Some laws apply to all sites and some are only relevant in some cases, for example if you have a shopping cart on your site.
All sites however should be designed with the Web Accessibility and the Disability Discrimination Act 1995 in mind, to ensure that people with disabilities can use and operate web sites. All businesses are expected to make ‘reasonable adjustments’ to their site and it is good practice to incorporate the Web Accessibility Guidelines (set out by the World Wide Web Consortium (W3C)) into your web design. These include such things as provide text alternatives for any non-text content such as large print, braille, speech, symbols or simpler language and making all functionality available from a keyboard. Use the www.w3.org/WAI/W3C website for up to date information and guidance.