I wouldnt put a warning sign up...and if anyone from H+S walked by and enquired, I would explain that:
1- I dont have a written risk assessment as I do not need one as a sole trader
2- I lay my hose along the gutter as much as possible with 4-5 ft crossing any pavement area
3- I use bright blue hose as a visual warning
4- the area has very low level of pedestrian traffic
5- the reason I am using WFP is to comply with work at heights regs
6- the work is very short duration and any trip hazard is LOW risk
7- they would walk away happy that I had minimised risks
2 years now of sensible risk observation and monitoring my working areas...not one near miss involving my WFP hose!!!
That account above reads like a Casualty" script...

Show me the proof...
