A number come to mind
4 Walsall - West Brom (was 404E)
42 West Bromwich - Tipton (was 402)
43 West Bromwich - Bilston (was 401)
50 Brimingham - Druids Heath
57 / 58 Redditch - matchborough
401E Walsall - Yew Tree
Various centro contracts such as 20/20 (previously 200/201), 38 (formerly 614), 69 (formerly Tigerman's 669), 71, 257, 298/9, 303... have been operated Pete's and after different periods with other operators are now back.
Pete's ran the Monday to Saturday daytime service on the 445 which is still operated under Diamond now as the 54 / 54A
A long serving route was 119 Sutton Coldfield - Falcon Lodge started around 1995/1996 using freight minibuses then was low floor darts in 1997. TWM tried 119 twice in 1996 and 1999 and gave up by 2001.
Then In 2012 nxwm reroute 115 to Churchill parade and increase 904 service to Falcon Lodge 15 minutes service this appears to kill 119 service off operated by Central connect around 2013 after 18 years.