can someone help my memory please - I worked at Marshalls of Cambridge as it then was, in 1969/70 production controlling, amongst other things, assemblies for the droop nose and visor of the second and third Concordes (ISTR 002 and 003), which Marshalls designed. I think 01 had a circular cross section nose, subsequent aircraft it was oval (but may have been t'other way round). Did Marshalls build the noses/visors for the rest of the fleet or just those two?