Due to Severn Trent upgrade works along Weoley Avenue, service X21 will be diverted between Tuesday 28th May and Friday 5th July 2019.
Towards Birmingham the service will serve the loop around Alwold Road before returning along Kemberton Road, Castle Road and Weoley Park Road, returning to the normal route after Gibbins Road.
Towards Woodcock Hill the service will divert after Gibbins Road, operating via Weoley Park Road, Castle Road and Kemberton Road to serve the loop at Alwold Road before returning to the normal route.
Unfortunately, stops between Gibbins Road and Alwold Road will not be served during this time.
National Express West Midlands apologise for any inconvenience caused.