The external audit took the form of a live audit. The auditor uses the system with a range of assistive techologies and devices. They work through a number of different user journeys, identifying areas of improvement, and assessing the experience for different user groups.

Most of the recommendations have been incorporated into the system following the audit. Their main conclusions:

The Lamplight system shows excellent compliance with the WCAG standards not only meeting basic compliance but choosing techniques which will work for the majority of users rather than skewing compliance to a specific user group.

and

…the usability and accessibility shown is exemplary.