From the SIA - Security at Events booklet
The following lists some examples of the types of guarding roles which
are likely to require an SIA licence, but only if they are undertaken in
relation to one or more of the manned guarding activities defined above
Screening a person?s suitability to enter the event or venue e.g.
individuals under the influence of alcohol or drugs or demonstrating
anti social behaviour.
Searching of persons and/or property to prevent items that are
unauthorised or illegal from entering the premises e.g. alcohol, drugs
or weapons.
Responding to incidents within crowds, queues or the audience to
control behaviour which is antisocial, undesirable or likely to result
in harm to others.
Ejecting individuals from a venue or event or designated area
e.g. concert pit or backstage areas.
Protecting a pitch, track or other identifiable area from spectators
or others with the intention of preventing damage to property or
persons.
Providing a security presence to prevent and detect crime within
a designated area.
Guarding property and/or equipment in situ during the setup
and breaking down of, for example, an event or exhibition.
Patrolling the perimeter of an event to prevent unauthorised entry
being gained by individuals, through the climbing or breaching of any
fences or barriers, or through being let in via an access point