Dame Elisabeth Hoodless, executive director of Community Service Volunteers recently expressed concern that the paperwork and checks required in vetting child workers could deter protential volunteers.

The head of the Independent Safeguarding Authority was wrong to conclude that additional paperwork and background checks attached to the new vetting and barring scheme would not deter volunteers from providing vital support to the social care sector.
From next year onwards, nine million adults working with children and vulnerable adults in England, Wales and Northern Ireland will have to register with the ISA if they …

The Times reports today that due to the difficulty in vetting foriegners they will be exempt from goverment checks before working with children:

Thousands of foreigners who work with children will escape the full checks designed to stop abusers, the Government’s safeguarding watchdog has warned.
Sir Roger Singleton, the Government’s child protection adviser, said that there were “significant barriers” preventing officials from obtaining details of criminal offences committed abroad, by both foreigners and Britons.
via The Times