These big diesels take me back as a boy/young teenager when we lived a few gardens away from the main Liverpool Street/East Coast railway line at Romford.
In the 'early hours' when life was typically very quiet we'd hear the last of the steam goods trains...........then taken over by the big diesels........that wonderful deep, deep rumbling sound and whistle as the turbo would spool and load-up the generator - and the faint vibration through the property of of a diesel drawn express en-route to Ipswich or further-on.