Dermot O'Leary branded 'worst nightmare' as This Morning viewers spot him being 'told off'

Dermot O'Leary was jokingly branded a guest's 'worst nightmare' as he returned to This Morning. The presenter made an early return to the programme alongside Alison Hammond on Monday (May 1) for the Bank Holiday show.

The ITV daytime show's usual Friday hosts stepped in for Holly Willoughby and Phillip Schofield on the first of a number of long weekends this month. The pair wasted no time in getting stuck into their busy show, with Dermot having to issue an apology within minutes.

Later, they were joined by personal trainer Wayne Leal who appeared on the programme to get the hosting duo involved in a set of trampolines exercises. And they were keen participants which led to Alison and Dermot being called out before the instructions even started.

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“When you were sitting down on the sofa I watched the two of you getting up, and you got up quite poorly, I may add," Wayne told them to which Dermot replied: "Oh god," while Alison insisted that she thought she can get up just fine.

Wayne, who has trained world champion athletes, captains of industry, and has been an influential guest speaker at many of the world’s top spas, soon got stuck into the exercises which saw the trio engage in some trampoline jumping. But it didn't take Alison long to joke that she should have worn her sports bra as she cheekily held her chest while gazing down the cameras.

But Dermot also got carried away and he appeared to come in for a telling off as the expert warned: "Rebounding is not about trampolining," to which Dermot replied: "Sorry, sorry mate." And when the producers played Kris Kross' classic track, Jump, Dermot started jumping even higher to which Wayne warned: