You need a licence if you intend to carry out work in the capacity of a door supervisor (bouncer) in premises licensed for public entertainment.
Licensing for door supervisors in the North West is managed by the Security Industry Authority.
Security Industry Authority
PO Box 9
Newcastle Upon Tyne, NE82 6YX
Phone: 08702 430 100
Fax: 08702 430 125
SIA website - GOV.UK
Opening hours: Monday to Friday 8am to 6pm.