Ofcom have found that ITV breached its rules regarding viewer competitions after it discovered that people who sent postal entries had "no chance of winning" as they were not included in the prize draw.
The broadcaster has been found to breach regulations on its competitions across its daytime schedule, including Good Morning Britain and This Morning, and big entertainment shows such as Ant & Dec's Saturday Night Takeaway.
An Ofcom spokeswoman said: "Our investigation found that people who entered these competitions by post were excluded from the draw, with no chance of winning...
"ITV failed to follow proper procedures and this led to a clear breach of our rules, which require all broadcast competitions to be conducted fairly. In all cases, some viewers who participated using the postal entry route had no chance of being selected to win the competition."
ITV are yet to comment.