high speed petrol engines for many motor manufacturers but most of their large engines were for Dennis Brothers Limited who became their largest customer. By the outbreak of war some kind of fusion of interests was being considered by the two boards. Fuses, filling shells, aeroplane wings During the war, in addition to the engines for Dennis Brothers and Hallford, by the end of the war some 4,000 of them, White and Poppe also made fuses. More specifically Fuse 80 bodies and 18pdr shell sockets, rings, caps and base plugs. White and Poppe also managed the Ministry of Munitions No.10 (later 21) National Shell Filling & Fuse factory, part of which was switched at the end of 1916 from fuses to making aeroplane wings. By November 1918 they employed 13,500 people. Discussions resumed after the war and in April 1919 Dennis Brothers shareholders were asked to consent to the issue of new capital for Dennis Brothers to acquire W & P Later that year White and Poppe became a Dennis Brothers subsidiary but maintained its separate identity. The extent of the fuse-making business was such that there were severe difficulties in winding it up. Dennis Brothers owners Both Poppe and White were made directors of Dennis Brothers. In the recession of 1920 Poppe and another director were sent to USA to investigate their most modern manufacturing methods. At the end of 1921 the shareholders were told the Coventry factory had not been adequately employed and there was a search for new type of work away from motor transport. As late as 1923, governments, British and foreign, continued to hold large war-surplus fleets of motor transport vehicles still dampening demand for Dennis commercial vehicles and demand for White & Poppe engines. The parent company developed a new multi stage turbine pump and turned to motor lawnmowers as well. By the end of 1923 the possibility of manufacture of London omnibuses had arisen. Poppe designed a new car but it was decided against putting it into production. He remained a director of Dennis Brothers until he resigned in 1923 though he continued the link as a consultant to Dennis Brothers. The Rover Company, their Clegg being obsolete, bought Peter Poppe and his completed car design making him their chief engineer and putting his car design into production as their Rover 14/45. Alfred White remained in charge of the White and Poppe Coventry