Rank Bush Murphy was formed in 1962 when Rank Organisation (which already owned Bush Radio Ltd through its acquisition of Gaumont British Picture Corporation in 1955) acquired Murphy Radio and amalgamated these radio and television manufacturers into Rank Bush Murphy Group. The company focused on producing colour television sets and designing a wide variety of specialised monitoring and test equipment needed by the transmitting authorities. In 1968, the company became part of a new division in Rank Precision Industries to focus on developing the scientific instruments business.

In 1978, the company was sold to Great Universal Stores.