Piers Morgan likes to have his 'Good Morning Britain' seat warmed before he sits on it to co-host the show.

Piers Morgan

Piers Morgan

The 'GMB' presenter's co-host Kate Garraway has exposed a long list of his backstage demands, claiming he has to begin the day with a large mug of Yorkshire Gold Tea, which has been stirred three times anti-clockwise, and the brew has to become a "perfect tan brown" colour before serving.

In a piece for The Sun newspaper, as part of her guest editing spot on the showbiz desk, Kate also revealed Piers' underwear must be iron-pressed before he heads into hair and make-up and all mirrors must be shined so he can see his reflection better, but she joked there is "some doubt he actually has one".

The presenter must have the day's newspapers laminated, binded and placed on his dressing room table, and he demands a breakfast of porridge with honey, and has apple and peanut butter brought to him while he rewrites the show's running order.

Piers must also have music from Lily Allen or Madonna playing in his dressing room to pump him up before the show, while fellow presenter Susanna Reid must be reassured she'll get a word in.

Finally, other members of the show are warned to expect the unexpected from the outspoken journalist.

Piers will remain on 'Good Morning Britain' until at least the end of 2019, after he signed a new deal with ITV that will see him continue to front the early-morning breakfast show alongside his co-star Susanna until the end of next year.

He said: "I've just signed an extension to my deal that takes me through to the end of 2019, people don't know that. It's an extension to an extension. I did two extensions in the space of four months. So I must be doing something right at the moment.

"But that can change."

Kate has been doing 24 different jobs in 24 hours as part of a fundraising challenge for Global's Make Some Noise, which also saw her performing in last night's live performance of Mamma Mia.