[David G]

The Combined Diving Associations, in their document entitled "GUIDELINES FOR THE SAFE OPERATION OF MEMBER CLUB DIVE BOATS "

suggests the following for First Aid kits:

FIRST AID KITS
Introduction
A first aid kit is the prime source of essential medical
items that will provide the first-aider with the basics to
attend the casualty prior to hospitalisation. The contents
of a kit depend on the distance of operation from
medical resources ashore and the risks that the boat
occupants are likely to be subjected to.

The following kits are the minimum recommended for
inshore and offshore diving respectively.

Small boat kit (Inshore use – up to 3 miles):

2 x Large sterile dressings
1 x Large pack of assorted adhesive dressings
2 x Large triangular bandages
1 x Rescue blanket or large polythene bag
6 x Safety pins
Disposable gloves

Items should be individually wrapped and sealed in
plastic bags.

Whole kit should be housed in a waterproof container.

Offshore kit (in excess of 3 miles):

1 x First aid instructions
6 x Each small, medium and large standard dressings
1 x Large pack of assorted adhesive dressings
4 x Large triangular bandages
10 x Assorted safety pins
3 x 50mm roller bandages
1 x 50mm crepe bandage
1 x Roll 25mm zinc oxide plaster
1 x Set of scissors
1 x Set of tweezers
1 x Pack of sterile cotton wool
2 x Pairs of disposable gloves
1 x Rescue blanket or large polythene bag
Disposable gloves
Pocket mask, or suitable barrier, for use when giving AV

Items should be individually wrapped and sealed in
plastic bags.

Whole kit should be housed in a sturdy weatherproof
container.

Additional items may be necessary if the diving is to
take place in more remote locations where medical
resources are not readily available and the expedition is
of a longer duration.

As HVSAC is a BSAC branch, then these guidelines represent best-practise.
(btw say hello to anyone at HVSAC who might remember me ; if your current mouldy kits are housed in Black BDH containers with contents list in the lid then I made them up in about 2000 )

HTH

David.