Responsibility for all building work compliance to the Building Regulations 2010 lies with those in control of the work in question, however it lies principally with the building owner to ensure that all contractors comply with their requirements of their relevant trades, and that all works are certified by a registered competent person, as is it is this building owner that can be served with an enforcement notice.
It is noted within the regulations that “Building Work” consists of all areas of construction and maintenance provision. This includes erection of buildings, extensions, material alterations and controlled service provision or extension. In general, this is applicable for new and existing buildings.
The UK Building Regulations 2010, Part K considers many aspects of fall protection and access that should be taken into account with respect to solution provision within the health and safety community, as support to compliance to the Working at Height Regulations.
With respect to Guard Rail provision it is specifically Section K2: Protection from Falling that we need to investigate further.