If you're interested,
R. J. Mitchell's house in 2 Russell Place Portswood complete with blue plaque:
https://www.google.co.uk/maps/@50.925772,-1.395055,3a,88.6y,305.29h,84.4t/data=!3m4!1e1!3m2!1sllvXFeinmjl2tSxZcA8dbA!2e0
and Roy Chadwick's at 38 Chessel Avenue:
https://www.google.co.uk/maps/@50.91396,-1.368243,3a,90y,29.58h,94.45t/data=!3m4!1e1!3m2!1spGiRtPY4BKtxdismu5QxBA!2e0
I wonder if they ever went to the Dell?