Gloucestershire child protection experts are to inform youth groups using a residential centre that its manager is a child sex offender.
The sexual assault took place at Dyke House in 1983
Victor Steynor, 64, who runs Dyke House near Ledbury as an adventure centre, was convicted last year of a sexual assault on a 10-year-old girl, in 1983.
He was made to sign the Sex Offenders Register but the judge made no restriction on working with children.
The Safeguarding Children Board said he "represents a potential risk".
Jo Grills, chair of the board said: "Gloucestershire Safeguarding Children Board first heard about Victor Steynor on 9 January 2007 as a result of a police referral.
"Since Victor Steynor's conviction, we have remained in contact with the police and looked at the implications of his sentence.
"We alerted agencies and organisations who use Dyke House of Victor Steynor's conviction and are now looking to alert local authorities and Safeguarding Boards across the UK.
"We recognise that Mr Steynor represents a potential risk to children and we are doing all we can within the law to minimise that risk."
The Board has been assured Mr Steynor has no direct contact with the children.
He is being monitored and risk assessed by the police because he is on the sex offenders register.
Mr Steynor has declined to comment.