The P125 Seeker was used by the Ministry of Transport in patrol vehicles during the 1980s' and was still in use in 1992 when the Traffic Safety Service and Police merged. It was fitted to both cars, and motorcycles (using a remote control head).

The seeker operated in the 81-88 MHz "A" band where the Ministry of Transport operated 10 AM channels

This radio was also used in conjunction with the P425 UHF FM radio and the Pye Linkline interface unit as a mobile crossband repeater