Design assistant

Series 2

 * Ben Austin
 * Matthew Savage
 * Peter McKinstry
 * Rob Dicks
 * Al Roberts
 * Ian Bunting

Series 3

 * Peter McKinstry
 * Ben Austin
 * Ian Bunting
 * Al Roberts
 * Rob Dicks

Series 4

 * Peter McKinstry
 * Al Roberts
 * Sarah Payne

2009 specials

 * Al Roberts