Samuel Kinge changed his name by deed poll from Daniel Kinge
A convicted paedophile who ran a major UK education website was free to visit children's homes in Uganda, a BBC investigation has found.
Samuel Kinge, 28, visited children at an orphanage and school near Kabale.
Kinge, who ran the Sparklebox website from Cheltenham and Evesham, was jailed earlier this month for a second time for downloading images of child abuse.
West Mercia Police, who were monitoring Kinge, said there was no foreign travel order in place banning his trips.
The force could not apply for an order stopping Kinge, who was on the sex offenders register, from travelling as they had no evidence he intended to meet children.
Det Ch Insp Damian Barratt, of the Public Protection Unit, told the BBC's Inside Out West programme: "When Samuel Kinge decided he was going to travel to Uganda he did indeed notify us, thereby complying with his requirements.
"So whilst we were aware of the travelling we were not able to prevent it from happening.
"Clearly, we do have information now that would indicate that he did get involved in contact with children and visiting orphanages.
"With that information we would now seek to make an application to prevent that travel and would do so in the future."
Kinge, who was known as Daniel Kinge before changing his name by deed poll, had been jailed for nine months in 2005 for downloading images of children being abused from the internet, while working at a Warwickshire school.
He was placed on the sex offenders register for 10 years and was disqualified from working with children indefinitely.
But he was able to go on to set up a website which was used in thousands of schools.
The conditions of his registration never prevented him from travelling abroad, but meant he simply had to tell police of his travel plans.
As well as the trips in 2008 and 2009, Kinge also spoke of sponsoring two children through a local Ugandan charity, which did not know of his background.
Claude Knights, director of children's charity Kidscape, said wider use of orders restricting convicted sex offenders' travel was needed.
"I believe that we are too cautious in relation to putting such procedures in place," she said.
A spokeswoman for the Home Office said new measures to strengthen the use of foreign travel orders would be introduced in March.
Kinge is currently serving a 12-month jail sentence.
The full story features on Inside Out on BBC One in the West and West Midlands regions at 1930 GMT on Monday.