This facility exists in gas, why not electricity?
Unfortunately it doesn't.
I'm also Gassafe reg.
Gas regs state "With the permission of the responsible Person, isolate the appliance"
If the R.P says catagorically no, you cannot isolate, the next move is to contact National Grid Gas, who do have the legal power to isolate.
However isolation can be stopped if there is an overriding safety factor like a complex chemical production process then failing and causing a greater danger of explosion than a gas leak would.
A few thousand loaves not getting baked would fit that clause.