Most of the network is operated on a commercial basis, with some services (usually evenings and Sundays) supported by TfWM. Smaller operators provide a range of services, either in competition with National Express West Midlands or under contract to TfWM. These include Diamond West Midlands and The Green Bus. Medium distance bus services from Birmingham include First Midland Red operating services to Worcester and Redditch. Arriva Midlands operates services to Tamworth and Kingsbury in Staffordshire. Johnsons Coach & Bus Travel operate longer distance bus services from the south of the conurbation such as the 20 to Stratford-upon-Avon and the 150/X50 to Redditch.