Irlen Central England
- A centre for assessing perceptual distortions in the environment and on the printed page. Information about Irlen syndrome, symptoms, and testing. Details about the centre.
- http://www.irlencentralengland.co.uk/

D&A The Opticians
- Details of eyecare products and services for this national retail chain. Includes store finder, special offers and online appointment booking.
- http://www.danda.co.uk/opticians/home/

Vision Express
- Includes a store finder, information on eyecare, lenses and frames for this nationwide chain of opticians.
- http://www.visionexpress.co.uk/

David Clulow Opticians
- London based chain of opticians.
- http://www.davidclulow.com/

Leightons Opticians
- Branches in Southern Britain and in Yorkshire.
- http://www.leightonsopticians.com/

Specsavers Opticians
- National chain of opticians in the UK.
- http://www.specsavers.com/