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Principles: Principles of Working as a Door Supervisor in the Private Security Industry (Refresher)
Practice for the knowledge paper of the two day Door Supervisor refresher: searching, protecting vulnerable people, antisocial behaviour, terror threat awareness and drink spiking.
Each attempt picks a new set of questions from a bank of 46, so you can practise as often as you like.
A hand held detector is passed close to the body without touching. Asking the customer to empty their pockets first reduces false alarms and keeps the search respectful.
Do not touch the item or use radios or phones near it, as signals could trigger a device. Move away, clear the area and report from a safe distance.
Searches must respect dignity and religious dress. Offering a private area and a same sex searcher meets the venue's needs without discriminating.
A person who may have been spiked must not be handed to someone whose identity cannot be confirmed. Check with her and her friends, involve the manager and call the police if in doubt.
Suspected drugs should be handled as little as possible, bagged, recorded and passed to the police. Destroying or returning them could itself be an offence.
A lock knife is an offensive weapon. It should be kept securely, the find should be recorded and the police should be told so they can deal with it.
The question bank has 46 questions across these topics. Every attempt mixes them at random.
Questions last checked: 20 October 2026. These are practice questions written for London SIA Course, not the official exam papers.
Practise with our free mock tests until you pass comfortably, then book your course.