I might be wrong ?? but I do not believe it is a legal requirement to leave warning notice's ?? it would be advisable & sensible but a legal requirement ?????
You may well be right. The GSIUR is a bit coy as it refers to legal requirements, but then says the following "In guidance, GSIUR recommends that any verbal notification of an unsafe gas installation should be backed up by written notification that the gas installation is unsafe and that continued use in domestic and commercial premises is an offence under GSIUR"
So the in writing bit is guidance only. I had assumed it mandatory as thats whats been drummed into me over the years to ALWAYS issue paperwork, but its not so.
Alfredo