Piers Morgan has blasted a parent for giving their child a "cold McDonald's" for a packed school lunch.

The outspoken Good Morning Britain presenter claimed parents "deserved to be vilified".

The comments come after the headteacher of a Kent primary school issued a newsletter to parents after a number of 'extreme and unacceptable' packed lunches had been given to kids at the school.

In the most extreme case, one child was given a cold McDonald's Happy Meal, including a hamburger and chips, that was bought the night before.

"That's not parenting, that's abuse," Morgan told viewers on the ITV daytime show.

"Yes, they need policing these people.

"They're committing child abuse.

"I have nothing against McDonald's but a congealed burger from the night before, that's disgusting."

Co-host Susanna Reid defended parents who don't have time to buy lunches, saying that they are "under a lot of pressure".

However, Piers believed parents providing unhealthy lunches should come on stage during an assembly wearing a dunce's hat.

He added: "I think a lot of parents are lazy and feckless."

After the break, the hosts were seen attempting to eat a cold McDonald's meal to see if it really was so bad.

Piers, who grimaced as he went to bite the hamburger, said: "I’m not eating that, that’s disgusting.

"I was right about that."

Viewers took to Twitter to back Piers for his strong views on the unhealthy school lunch.

One viewer said: "Don't often agree with Piers but on children's lunchboxes I certainly do! #gmb."

Another added: "#GMB piers's got a point sometimes a nanny state is good for some of these parents."

A third said: "Loving @piersmorgan passion for this subject this morning #kidslunches I'm with you sir!! #GMB @GMB."