(U. K). Retained firefighters are part-time firefighters, so called because they are paid a 'retainer' every year, along with a call-out fee every time they respond to an emergency call, and a training fee for the hours of training/drill they attend. They have set 'on-call' hours, during which they must respond to emergency call-outs. Retained brigades are typically based in rural areas or large villages/small towns where there is no real need for a wholetime brigade. A retained crew may respond to a call where only they are in attendance, or they may be part of a response to a larger incident along with wholetime crews