His firm Kenneth Grange Design was formed in 1956 and in 1972 Sir Kenneth was one of the founding partners of the Pentagram design consultancy in London.

BBC: InterCity 125 designer Kenneth Grange knighted

Last May the city's entire political establishment was embarrassed when a birthday party honouring Jack Davis, who ran Mr Brown's campaign for mayor, featured a leather-clad sado-masochist carving a pentagram into the back of a scantily dressed man.

ECONOMIST: City life