Duncan has a commercial radio background, having worked for Lincs FM (Lincolnshire), Invicta FM (Kent) and Trax FM (Yorkshire), where he presented the breakfast show. He joined the BBC network announcing team in April 2004, providing continuity announcements on BBC One, BBC Two and later UKTV. On 25th December 2009, BBC Breakfast showed a behind-the-scenes report concerning continuity at Christmas and interviewed both Duncan and Peter Offer.
On 18th May 2018, Duncan tweeted that ahead of the Royal Wedding of Prince Harry and Meghan Markle, his wife Katie had joined him on BBC Two. Katie explained that they had been married for 10 years and that marriage is all about sharing moments. They then introduced Gardener’s World together.
In September 2018, in a thread on his Twitter feed, Duncan referenced a YouTube clip featuring a recording of a mid-1980s Saturday Superstore segment, in which Phillip Schofield went behind-the-scenes in NC1 at BBC Television Centre. After a Twitter user commented that the present day equivalent is no longer based at Television Centre, Duncan recalled the period where playout was transitioning from Television Centre to the Broadcast Centre: “We moved out early in 2005. I did the first shift from the new playout suite and ended up having to run down Wood Lane at 9.50pm to introduce the 10 o’clock news from the trusty old booth at TVC. We moved again earlier this year.”Read More