Colin Baron

He attended a boys' grammar school (Carlton Bolling College since 1977) in the south-east of Bradford, then in the West Riding.

At the RRE he did research on microwaves, which led to him becoming a division leader on guided weapons.

From 1958 he had worked with Cambridge-educated John Twinn in developing an affordable guided missile that could knock out low-flying aircraft.

The cost of providing a missile with radar guidance was an expensive solution.

The solution was to employ a Command to Line of Sight Guidance System (CLOS), whereby the missile contained no radar.