Piers mentioned Labour's Lucy Powell, who is Shadow Minister for Business and Consumers.
What did Piers Morgan say about Lucy Powell on GMB?
But he referred to her as the business minister - rather than the shadow business minister, leading Susanna to step in and correct him.
Piers said: "Interesting interview there with the business minister, Lucy Powell..."
"Shadow business minister," Susanna quickly told him.
"Sorry, yeah. Would-be. The would-be business minister. The Shadow business minister. Trying to push her, because Labour's beginning to push this narrative that we need to extend the furlough scheme it's all going to be very expensive and of course, ultimately, those with broader shoulders are going to have the burden of extra taxation.
Sorry, yeah. Would-be. The would-be business minister.
"We know what that means. It means wealthier people, in Labour's eyes, are going to have to pay the bill."
The conversation follows calls from Piers for the public to support Britain's businesses reopening.
Support Britain's businesses
'Super Saturday' (July 4) meant businesses such as pubs, restaurants and hairdressers could reopen after being forced to close during the lockdown.
To help these businesses, ITV presenter Piers has asked the public to show their support.
On Twitter, Piers shared a tweet from a London restaurant that had a tricky start to reopening.
Restauranteur James Chiavarini said: "Flipping heck. 23 no-show covers over two restaurants tonight. The cheek of it. Now I know how @1GarethWynJones felt when that fella never closed the gate."
Piers, disgusted at what had happened and branding it "appalling", retweeted James.
The GMB host wrote: "FFS. This is appalling. Show some damn respect to these businesses that have worked so hard to get through the lockdown and re-open again. I'll be in soon, James."
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