The heir to the Greggs bakery chain has been found guilty of nine counts of indecently assaulting boys.
Colin Gregg, 75, was found guilty on Friday of offences involving four victims which happened over a 30 year period between the 1960s and the 1990s.
Gregg, of Gosforth, Newcastle, showed no reaction as he stood in the dock at Leeds Crown Court for the verdicts, which were returned after almost 12 hours of jury deliberations.
Gregg helped to build up the family business in the 1960s but later became a teacher and a social worker. He will sentenced at later date.
An NSPCC spokesperson said: “Gregg shamelessly betrayed the trust vulnerable young children placed in him and his sickening campaign of abuse will have had life-long effects on his victims.
“It is thanks to their bravery in speaking out that he’s finally been brought to justice and can no longer prey on other children.
“Gregg probably thought he got away with these crimes but this case is proof that victims of abuse will be listened to, no matter how much time has passed.
“Adults with concerns about a child can contact the NSPCC helpline in confidence on 0800 808 5000 or via email@example.com. Children can contact Childline 24/7 on 0800 1111 or at www.childline.org.uk.”