The police radios used in The Bill use the Klickfast Carrying System instead of a belt clip, which may grow loose.Currently the officers have only used this to clip their PR to their gortex jackets, hi-vis jackets, stab vests, shirts and navy jumpers.The officers have not clipped it to their belt, but instead the put it in a holster, which is more secure.
They have several types of docks and studs-
32mm, 38mm, 50mm and 60mm Docks
This clips onto the back of the radio so it can be clipped on without a case
This is the Klickfast RSM BTP Tag
Klickfast Screw-Down Retro-Fit Garment Dock
This dock gets screwed onto a desk or a dashboard
Klickfast Belt Loop Dcok