Unit manager

Series 1

 * Emma Reid
 * Llyr Morus
 * Justin Gyphion
 * Lowri Thomas

Series 2

 * Justin Gyphion
 * Rhys Griffiths

Series 3

 * Rhys Griffiths
 * Huw Jones
 * Geraint Havard Jones

Series 4

 * Rhys Griffiths

2009 specials

 * Beccy Jones
 * Geraint Williams
 * Rhys Griffiths

Series 5

 * Rhys Griffiths