As per guidance from DVSA, Bongos registered before 1st September 2002 are not subject to a CAT test, provided they originally had more than 5 passenger seats and even if they now have less than 5 passenger seats.
They should have a non-cat test.
The guidance from DVSA is on these links:
viewtopic.php?f=3&t=77431
viewtopic.php?f=3&t=76856&p=712860&hilit=dvsa#p712860
Non CAT test Pre September 2002
Non CAT test Pre September 2002
Allans now closed. In Plymouth, use PGS (Plymouth Garage Services) or Mayflower Auto Services