By Olivia Wheeler Susanna Reid had a six-word response upon learning that former co-host, Piers Morgan, was back in the ITV studios on Tuesday. During the latest episode of Good Morning Britain, Susanna, 53, and co-star Ed Balls went over to speak to Lorraine Kelly for their usual segment, where the Scottish presenter, 64, gives a rundown of what’s coming up on her chat show. Speaking on Tuesday’s preview, Lorraine revealed that Piers, 59, would be in the studio for an interview on her show. In a move which hit all the headlines at the time, Piers famously quit Good Morning Britain in 2021 aft…