Convicted paedophile Andrew Sealey 39,has been warned by a judge he faces prison after being snared by vigilantes.
Sealey,admitted having a text message discussion engaging in sexual activity with three children he thought were aged 14 or 15.
Southampton Crown Court, Hants, heard he even gave instructions to the 'children' and was well aware they were under the age of consent.
Sealey, who appeared via video link from prison wearing a grey round neck sweater, admitted eight counts of attempting to incite a child to engage in sexual activity.
Watch this exclusive video of Sealey thinking he is meeting up with underage children at Paultons. He was later arrested by Police
He also admitted one count of attempting to meet a child, namely 'James', following sexual grooming at the theme park on May 28 this year.
Sealey was told he would be sentenced on August 4 and was remanded in custody.