| James Crole (UK)
|
| Location
|
Travelling
|
| Operated
|
March 2009 to May 2011
|
| William Porter (UK)
|
| Location
|
Travelling
|
| Operated
|
2005 to March 2009
|
| George Rogers Jnr. (UK)
|
| Location
|
Travelling
|
| Operated
|
2000 to 2005
|
| George Whittle (UK)
|
| Location
|
Travelling
|
| Operated
|
March 1996 to 1999
|
| Patrick Burton (UK)
|
| Location
|
Travelling
|
| Operated
|
1994 to March 1996
|
| David Pidgley (UK)
|
| Location
|
Travelling
|
| Operated
|
July 1993 to 1994
|
| Belgium
|
| Location
|
Belgium
|
| Operated
|
1986 or later to July 1993
|
| Michael Phillips (UK)
|
| Location
|
Travelling
|
| Operated
|
1983 to 1985 or later
|
|
