LOLER (Lifting Operations and Lifting Equipment Regulations)
Businesses and individuals with lifts or lifting equipment in the building have the responsibilities to comply with legislation. Among these responsibilities is the requirement to inspect and maintain this equipment regularly and keep a record of this and any defects found. The Health and Safety Executive also states that all equipment used at work must be thoroughly examined by a competent and fully trained person.
The Health and Safety Executive also states that all equipment used at work has to be thoroughly examined every six months by a competent and fully-trained person. https://www.hse.gov.uk/work-equipment-machinery/loler.htm