[QUOTE=Ross;618518]
Building reg's has nothing to do with H&S
And health and safety regs have nothing to do with domestic building construction.

That's what building regulations are for.
Sorry i may be wrong on the 300mm,maybe its 350, its definitely not 1500 LOL.
From Building regs part N:

Requirement N1 is that any glass in the area should be toughened, laminated, or standard glass can be used in small panes. Definitely a 1500mm minimum height in doors and next to doors there.
Your right there isn't, but there is if there is a risk you can slip in the shower towards a window that is with the zone,then H&S dictates it should be.
Can you tell me which part of Building Regulations a trip zone is defined in, as I don't recall ever reading it myself. We don't have health and safety covering domestic housing, and health and safety requirements for landlords doesn't require you to fit toughened glass if the window is in any trip zone either, otherwise I would be replacing a lot more windows than I do at the moment. If such a regulation does exist I would like to know about it as I would be able to sell a lot more windows.