The Chase Line is a suburban railway line in the West Midlands region of England. It runs from its southern terminus, Birmingham New Street, to Walsall, and then Rugeley in Staffordshire, where it joins the Trent Valley Line. The name of the line refers to Cannock Chase which it runs through at its northern end. Part of the line, between Birmingham and Walsall, has been electrified since the 1960s; work to electrify the remaining 15 mile stretch of line between Walsall and Rugeley, was completed in December 2018. The line from Birmingham via Aston, Perry Barr and Bescot was opened in 1837 as part of one of the earliest railway main lines; the Grand Junction Railway (GJR). This line did not serve Walsall directly, but continued from Bescot to Wolverhampton (this is now part of the Walsall to Wolverhampton Line). A station on the GJR called Walsall was opened on the outskirts of the town, this was later renamed , and is now closed. The GJR became part of the London and North Western Railway (LNWR) in 1846. The section through Walsall, including the present Walsall station was opened in 1849 by the South Staffordshire Railway, as part of their (now closed) South Staffordshire Line from to Wychnor Junction, north of Lichfield, a connection was opened from Walsall to the GJR at Bescot, allowing direct Walsall-Birmingham trains. The section between Walsall and Rugeley Trent Valley was constructed by the South Staffordshire Railway, and the Cannock Mineral Railway (CMR): The South Staffordshire Railway built the line from Walsall to Cannock, opening in 1858, and the CMR built the line from Cannock to Rugeley, opening in 1859. The South Staffordshire Railway was absorbed by the LNWR in 1867, as was the CMR two years later. The last part of what is now the Walsall/Chase Line, the Soho Loop Line; a link running from Perry Barr Junction on the original GJR to Soho Junction on the Stour Valley Line, allowing an alternative route into Birmingham from the west which bypassed Aston, was opened by the LNWR in 1889.