As a charter operator I have to check to cover my arse.
It is getting bigger than Ben Huir ,see

I come across a broad range of tickets issued that don't have a depth rating printed on them, that the said diver has been trained to dive to.
When I go to the different agency sites to find the info, it is not listed.
Some agencies keep the shifting goalposts due to liability issues increasing.
With so many informed expericenced instructors teaching onboard this site I wonder if you could supply the Agency & the levels taught or point me in the right direction to find it. In the meantime,
I will start a list with examples & please feel free to add extra agencies.
DEPTHS in Metres please.
AGENCY, MOD1, MOD2, MOD3, or NITROX, NORMOXIC, TRIMIX
SSI -------m. -----m. -----m. ------m.------- m.------ m.
IART
IANTD
TDI
PSA
BSAC