As for my own recollections of bus wars, the one that stands out to me (apart from the local ones mentioned), is Darlington.

https://en.wikipedia.org/wiki/Darlington_Bus_War loads online about it. But there is still implications of that war now.

More recently the 'alleged' collusion with GNE/ANE and ANE drivers being fed raw meat, still makes me laugh to this day. http://www.passengertransport.co.uk/2011...-raw-meat/