There's one in a '39 Daimler Drophead Coupe ('43? chassis) about a block down the street from me. I've been offered the chance to drive it this summer. (Date explanation: pre-war body, post-war running gear/frame. Seems there was some local unpleasantness in the interim.)
I didn't watch all the vids you mentioned, but the Daimler site seems spot on with the driving instructions I was given last year. (Could have driven it last year, but I had limited available time, and didn't want to rush thru the transmission plus get my head around the whole right-hand-drive detail.
http://videokarma.org/attachment.php...1&d=1555804440