My post#14 on the construction of the Spitfire makes reference to Lucas’s engineering (electrical and instrumentation) contribution to the Spitfire, there is a memorial booklet that Lucas produced to commemorate WW2 titled ‘Lucas at War‘.
As a youth, one of the older players in a cricket team I use to play for in Yardley would tell us a similar stories of watching the Spitfires taking off and landing during test flights and the distinctive roar of the RR engine (Merlin)
He told us the test pilots would use the stacks / towers at Hams Hall power station as a visual reference point when returning to land at Castle Bromwich as the could see the smoke from the towers above the clouds when flying.
A link attached to give more information on the fantastic Spitfire plane
https://dingeraviation.net/spitfire/spithome.htm
(Source
https://dingeraviation.net/spitfire/spithome.htm, site accessed 11/3/2023 09.07 am)