Rylan Clark told critics to "lay off" Scott Mills after the popular BBC Radio One presenter stepped in for veteran broadcaster Ken Bruce on Radio Two. Scott, 49, is covering for Ken, 71, while he is absent from his mid-morning show.
PopMaster Ken's show pulls in 8.7 million listeners and boasts the largest audience on UK radio. Scott, who hosts the afternoon show on Radio One, took to Twitter to announce he would be filling in for Ken this week.
He wrote: "All week I'm sitting in for Ken Bruce on @BBCRadio2 from 9.30am. Each day @mimiwebb will be picking her 'Tracks of My Years' just after 11.30am." And his colleague Rylan rushed to defend him as the news was met with some criticism.