The law has changed

From 12 October 2009, new measures are being introduced to help prevent unsuitable people undertaking paid or volunteer work with children or vulnerable adults.

It’s called the Vetting and Barring Scheme (VBS) and the Independent Safeguarding Authority (ISA) has been set up to help implement the Scheme and make decisions over who should be barred from working with vulnerable people. Those decisions are legally binding too. Failing to comply could result in both the employer and the employee or volunteer being prosecuted, or even going to prison.

From July 2010 all new employees, those moving jobs and volunteers who want to work with children or vulnerable adults can register with the ISA. From November 2010, they must be ISA-registered. From then on it will be illegal to employ new people who are not ISA-registered.

see this link:

http://www.isa-gov.org.uk/toolkit/