The practice of wearing a jacket and trousers of matching material made by the same firm was still some years away.

ECONOMIST: Men's clothing

Forensic witness Rosalyn Hammond said there was "potential" for material to be transferred while Mr Lawrence's jacket lay on a police station floor.

BBC: Evidence from Stephen Lawrence jacket 'not transferred'

Multiple rods are grouped within another metal jacket which is then drawn and baked to convert the raw material to the ceramic form and the rod into a wire.

ECONOMIST: Cool coils