The link below is for a petition to try to persuade advertisers to stop putting adverts on at times and on channels where children may end up trying to pester parents into buying products or services that are inappropriate:
"We the undersigned believe debt adverts on childrens' television channels, especially for secured loans, are a disgrace and call on the TV channels responsible to immediately stop showing them."
http://www.moneysavingexpert.com/not4kids