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Rubber tyre makers, of Baker St, London (head office); works at Paddington and Bradford-on-Avon
1898 Company registered
1900 Agreement with Kelham Rolling Mills Co of Sheffield (who advertised special steel channels for use with rubber tyres) to supply quantities of channel steel; Sirdar paid for special rollers; price would be adjusted if market prices dropped.
1904 Case brought against Kelham Rolling Mills Co concerning the supply of steel section; judgement partly in favour of the defendants but award given to Sirdar in view of the question of price/quantity of steel supplied.
1906 Advert for Royal Sirdar Buffer Tyres; head office Baker St, London; works Shirland Road, Paddington and Greenland Mills, Bradford-on-Avon.
1910 Showed solid rubber tyres at the Olympia Motor Show .
1911 The War Office gave Sirdar a 12 month contract for supply of pneumatic motor-car tyres and inner tubes; also appointed contractors for supply of general rubber goods and bicycle tyres.
1914 Company wound up by court order..
1915 Avon India Rubber Co took over the works at Greenland Mills. The Sirdar company had gone bankrupt the previous year and Avon took it over to supply munitions for the war effort. This acquisition swelled the workforce by another 300 people.