The MAUD Policy Committee was kept small and included only one representative from each university laboratory. Its members were: Blackett, Chadwick, Cockroft, Ellis, Haworth, Franz Simon, Thomson and the Director of Scientific Research at the MAP. The MAUD Technical Committee's members were: Moses Blackman, Egon Bretscher, Norman Feather, Frisch, Halban, C. H. Johnson, Kowarski, Wilfrid Mann, Moon, Nevill Mott, Oliphant, Peierls and Thomson. Its meetings were normally attended by Winston Churchill's scientific advisor, Frederick Lindemann, or his representative, and a representative of Imperial Chemical Industries (ICI). Basil Dickins from the MAP acted as the secretary of the Technical Committee. Thomson chaired both committees.