The route was electrified in the early 1990s, beginning in 1991 and completed on the 6 June 1993. Redditch station was rebuilt at this time.
The cities, towns and villages served by the line are listed below.
For many years, passenger services on the line were worked by elderly Class 108, 115, 116, 117, 118 and 121 diesel multiple units. However, by the early 1990s these trains were becoming increasingly unreliable, so new trains were built to coincide with the electrification of the route in 1993. By 1995 the last of the old trains had been withdrawn, having been replaced by the current Class 323 electrical multiple units. Services are currently operated by London Midland on behalf of Centro.
Current daytime service levels are:
There are long-standing proposals for improvements to the line. Extra stations have been proposed for Mere Green (between Four Oaks and Butler's Lane), Raddlebarn Road (between Bournville and Selly Oak, to serve Selly Oak Hospital), and Wychall (between Northfield and King's Norton). More ambitious plans include the re-opening of a short spur south of Longbridge to Rubery and Frankley and the re-introduction of local trains on the Camp Hill Line (effectively a loop between Birmingham New Street and King's Norton).
There are also plans for the introduction of a passing loop at Alvechurch to allow 3 trains per hour to Redditch. Currently, the line is single-track between Barnt Green and Redditch and so it is impossible to have more than 2 trains per hour. If services are delayed, then the trains may miss out stations between Birmingham New Street and Longbridge to make up time, or the service may be curtailed at Barnt Green to prevent a knock-on effect to other services.
Nevertheless, the line's main problem is capacity on its central section. The long term aspiration is for dedicated tunnels through central Birmingham: this would either take the form of new bored tunnels (favoured by the SRA) or a re-opening of Birmingham Curzon Street Station to allow two of the existing four tunnels to be used for local trains only (formerly favoured by Central Trains). With the current funding problems on Britain's railways, it is unlikely that the Cross-City Line will see any improvement.
