From clocks to catheters

Smiths Group, founded in 1851 by Samuel Smith, sold clocks, watches and jewellery

It pioneered the first British speedometer in the 20th century which was used by car manufacturers including MG, Jaguar and Rolls-Royce

Smiths moved into medical technology in 1958 when it bought Portland Plastics

The conglomerate now employs around 22,000 people in more than 50 countries

It has five divisions including a defence business which makes X-rays and body scanning equipment which is used in airports

Smiths’ medical arm makes ventilators, resuscitators, catheters and other products for paramedics and doctors

Its products and services are sold in 200 countries

Last year it pulled in £3.3bn of sales – £951m from its medical business