Nexus around here mainly did leaflets for tickets, metro, route maps, secured services, misc services, school services. Operators were left to do their own leaflets. Even some indepdents produced their own leaflets.

I know the likes of South Yorkshire, West Yorkshire, Merseytravel and GMPTE did leaflets for all services. Not sure of the West Midlands as I didn't frequent the area much, mainly due to it being difficult getting cheap tickets on Virgin Cross Country Trains. Strathclyde acted similarly to Nexus producing leaflets for secured services, plus rail timetables in the Strathclyde area, with bus operators producing their own timetables. Not sure what the case is for each travel area now since I don't collect timetables anymore, and my travel planning is via digital means.