2.2 Reasonable grounds for suspicion depend on the circumstances in each case. There must be an objective basis for that suspicion based on facts, information, and/or intelligence which are relevant to the likelihood of finding an article of a certain kind or, in the case of searches under section 43 of the Terrorism Act 2000, to the likelihood that the person is a terrorist.
Reasonable suspicion can never be supported on the basis of personal factors. It must rely on intelligence or information about, or some specific behaviour by, the person concerned. For example, other than in a
witness description of a suspect, a person’s race, age, appearance, or the fact that the person is known to have a previous conviction, cannot be used alone or in combination with each other, or in combination with any other factor, as the reason for searching that person. Reasonable suspicion cannot be based on generalisations or stereotypical images of certain groups or categories of people as more likely to be involved in criminal activity. A person’s religion cannot be considered as reasonable grounds for suspicion and should never be considered as a reason to stop or stop and
search an individual.
2.3 Reasonable suspicion can sometimes exist without specific information or
intelligence and on the basis of the behaviour of a person. For example, if an officer encounters someone on the street at night who is obviously trying to hide something, the officer may (depending on the other surrounding circumstances) base such suspicion on the fact that this kind of behaviour is often linked to stolen or prohibited articles being carried. Similarly, for the purposes of section 43 of the Terrorism Act 2000, suspicion that a person is a terrorist may arise from the person’s behaviour at or near a location which has been identified as a potential target for terrorists.
2.4 However, reasonable suspicion should normally be linked to accurate and current intelligence or information, such as information describing an article being carried, a suspected offender, or a person who has been seen carrying a type of article known to have been stolen recently from premises in the area. Searches based on accurate and current intelligence or information are more likely to be effective. Targeting searches in a particular area at specified crime problems increases their effectiveness and minimises inconvenience to law-abiding members of the public. It also helps in
justifying the use of searches both to those who are searched and to the public. This does not however prevent stop and search powers being exercised in other locations where such powers may be exercised and reasonable suspicion exists.