Large scale event guidance
The Purple Guide is an online resource that aims to help event organisers to manage health and safety, particularly at large-scale music and similar events. There is a subscription of £25 plus VAT for 12 months' access to the website, including all updates and additional guidance that may be added during that period.
The HSE (Health and Safety Executive) also provide guidance on running events safely.
The SIA (Security Industry Authority) also provide security at events guidance.