He filled in as co-host of Sunrise over the summer period , while David Koch was on holidays .
On 13 August 2007 , White joined Melissa Doyle as host of Sunrise filling in for David Koch .
White filled in as co-host of Sunrise over the summer period , while David Koch was on holidays .
On 13 August 2007 , White joined Melissa Doyle as host of Sunrise filling in for David Koch .