Newcastle United Football Club is an English professional association football club based in Newcastle upon Tyne. Following the club's most recent relegation from the top-flight during the 2015–16 season, Newcastle returned to the Football League's 2nd tier, the Championship, for the 2016–17 campaign. Newcastle United was founded in 1892 by the merger of Newcastle East End and Newcastle West End, and has played at its current home ground, St James' Park, ever since. The ground was developed into an all-seater stadium in the mid-1990s and now has a capacity of 52,354. The club has been a member of the Premier League for all but two years of the competition's history, and has never dropped below English football's second tier since joining the Football League in 1893. The club has been owned by Mike Ashley since 2007, succeeding long term chairman and owner Sir John Hall.
They have won four League Championship titles, six FA Cups and a Charity Shield, as well as the 1969 Inter-Cities Fairs Cup and the 2006 UEFA Intertoto Cup. Newcastle United has the ninth highest total of trophies won by an English club. The club's most successful period was between 1904 and 1910, when they won an FA Cup and three of their First Division titles. The club is the seventeenth richest club in the world in terms of annual revenue, generating €169.3m in 2015. Historically, Newcastle's highest placing was in 1999 when they were the fifth richest in the world, and second in England only behind Manchester United. The club were highly successful in the Premier League in the 1990s and early 2000s, but have been mostly struggling since the 2006–07 season, and were relegated in 2009 and 2016.
They have a fierce local rivalry with Sunderland, and the two clubs have engaged in the Tyne–Wear derby since 1898. Furthermore, are also rivals with Middlesbrough and engage in the Tyne-Tees derby. The club's traditional kit colours are black and white striped shirts, black shorts and black socks. Their traditional crest takes elements of the city coat of arms, which features two grey seahorses.