Workington, Scunthorpe, Leicester run regular sessions, Iwade run a few, could probably add I.O.W. ( but not many ). From the sound of it you can now add Buxton, Glasgow and a probably a few at Mildenhall. Not sure what Belle Vue are planning.
Duns hasn't been used for a few seasons . Redcar, sadly, no longer run anything. Lack of numbers seem to have made amateur meetings a thing of the past. Even second half events are becoming rare at tracks now.
Whilst Im aware of a few private ‘schemes’ that hire tracks to give people a chance to try speedway they seem to be mainly attended by the older generation just wanting to say they've had a go, with the odd kid joining in.
Gone are the days when Stoke, Kings Lynn and Scunthorpe ran regular amateur challenge matches at all levels as there were that many riders taking part.