classic33
Leg End Member
That might be it, the banked track.@classic33 - I've found this source, which has more information: http://www.internationalcyclesport.com/html/tracks_in_yorkshire.html
There seems to have been a track on Cardigan Fields as a one-off, but Roundhay's the well-known one. This seems to have been banked originally from the photo below but isn't currently:
View attachment 588017
From here a certain Tom Pidcock was racing in 2009 in the Under 10's, alongside other local riders we know: https://www.britishcycling.org.uk/track/article/tra20090826-West-Riding-Track-League-0