Hayden-Smith was a regular guest in the CBBC studio for some time, and was invited to guest present the studio links in autumn 2002. He had expressed a wish for some time to have a go at presenting, and was encouraged by existing CBBC presenter Jake Humphrey to ask the bosses if he could stay on. This was agreed and Hayden-Smith moved to London to become half of the main presenting team for the afternoon slot on BBC1, a position he would continue to hold for just under four years. During that period from time to time he also presented the CBBC breakfast shows on BBC1 and BBC2 as well as the digital CBBC channel. In 2003 he also filmed his final scenes of Byker Grove, in which his character was killed off. Hayden-Smith became close friends with several of his fellow presenters, including Angellica Bell and Adrian Dickson.
By this time he had begun presenting the UK Top 40 on CBBC. The show had begun in early 2002 along with the CBBC digital channel and was originally presented by Adrian Dickson and Konnie Huq. It was aired on Sunday nights concurrently with the Top 40 show on Radio One. After Dickson and Huq left the show in September 2004, Hayden-Smith was approached to become the sole presenter, having stood in for Dickson at the last minute one Sunday night several months previously. At first the show continued its success, but in 2005 the format changed to become more "computerised" and this was not received well. The last show was broadcast in June 2005.