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Mirrlees Blackstone Company
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 1897 air blast injection single cylinder diesel engine according to Diesel's design.4812 viewsThe first diesel built in Britain
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 3376 viewsAround the year 1903, the Admiralty ordered two engines, each of 160 BHP at 400 r.p.m. for installation in the battleship HMS Dreadnought.
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 3179 viewsDuring 1906, the Admiralty specification required lightweight diesel engines for the propulsion of pinnaces and Mirrlees designed a four cylinder unit of 120 BHP at 400 r.p.m. These engines had bed plates of aluminium and columns of manganese bronze. The piston diameter was 9 and three quarter inches with a stroke of 12 inches.
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 Broken Hill power station in Australia.4059 viewsMirrlees next designed a larger engine during the latter part of 1912, which in it's production form was a cross head type unit having a bore of 21.5 inches and a stroke of 24 inches giving 166 BHP per cylinder at 215 r.p.m.
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 3938 viewsIn 1926 attention was paid to the development of other enclosed types, incorporating forced lubrication and two models were designed, one having a bore of 12.5 inches and a stroke of 19 inches, developing 60 BHP per cylinder at 300 r.p.m. and the other having a bore of 13 and three quarter inches and a stroke of 19 inches, developing 75 BHP per cylinder at 375 r.p.m.

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 3541 viewsMirrlees designed 'Ricardo' sleeve valve engines, one type having a bore of 5.5 inches and a stroke of 6.5 inches, developing 20 BHP per cylinder at 900 r.p.m., and the other with a bore of 17 inches and stroke of 21.5 inches, developing 50 BHP per cylinder at 200 r.p.m.

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 4157 views'HP', having a bore of 13.75 inches and stroke 21 inches was also developed during this period., made in five to eight cylinders in-line sizes, either normally aspirated or turbocharged.
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 3598 views1934 Mirrlees designed a new engine, having a bore of 8.25 inches and a stroke of 12 inches developing 60 BHP per cylinder at 900 r.p.m. Example is a UD8
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 3869 views'J' engine with a bore of 9.75 by 10.5 stroke, was made in 3,4,5,6 and 8 cylinders in-line and 8, 12 and 16 cylinders Vee form covering a range of 135 to 2,480 BHP at 600 to 1000 r.p.m.
     
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