If your boat is not privately owned and managed, such as a hire
boat, small passenger vessel, clubs and societies activity craft,
café boat, etc, etc. your examiner is likely to need to be
authorised specifically to undertake the examination for that type
of craft.
There is a tick box on the search page, tick this and the
examiners that are listed are authorised to carry out examinations
to the 2002 Boat Safety Scheme Standards for non-private
craft.
You should also note the information on the affect of gas safety
legislation on such boats - LINK
Apart from the training in the different checks for non-private
craft, all examiners undergo the same training and skills
updates.