On 23 September 2008, she joined BBC Tees to start co-presenting the station's weekday 10.00–13.00 programme with Neil Green. She has a long association with the Middlesbrough-based station, her dad Jack Youdale having been the 'in-house' Astronomer for its two previous incarnations, BBC Radio Teesside and BBC Radio Cleveland from the start of transmissions the same year Diane was born (31 December 1970).