they dont say dont use WFP but to be aware of the dangers ie slippy paths etc and also recomend to put grit down if ice is forming i thought it was common sense advice, if we all use common sense and avoid using where it could become a major problem ie in front of doors or where there is a lot of pedestrian traffic then hopefully no accidents wil occur and the HSE wont need to put rules in place that stop us working att all.
PS i say well done to fed for the guidance they have give