If you are using temporary power or lighting in the entertainment industry, then the answer is simply YES.
On BBC “My Risks” it states:
“Ensure that any temporary electrical system, no matter how small, complies with BS7909.” (Click here to see the link)
Part of the Scope of BS7909 reads:
“This British Standard gives recommendations for the management, design, setting-up and operation of temporary electrical systems using low voltage a.c. electricity, for the entertainment and similar or related industries. Mobile and transportable units with electrical installations that are used in these industries are also covered.”
Please note that low voltage a.c electricity is defined as “voltage exceeding 50V a.c. but not exceeding 1000V a.c. between conductors, or 600V a.c between conductors and earth”.