Yes, roof edge protection is a legal mandate under the Work at Height Regulations 2005 for any roof accessed for maintenance, plant inspection, or cleaning.
The regulations enforce a strict “hierarchy of control” that legally requires building owners and employers to prioritise collective fall protection (such as guardrails) over personal fall protection (such as harnesses and lifelines). Collective systems protect everyone automatically without requiring specialist user training or equipment inspection, eliminating human error at height.