Question: The 2005–06 FA Premier League was sponsored by a company headquartered in what city?

Context paragraphs:
List of Northwich Victoria F.C. seasons: Northwich Victoria Football Club are an English football club based in Northwich, Cheshire.  They are currently competing in the Northern Premier League Premier Division.  The club was founded in 1874, playing challenge matches organised on an ad hoc basis until the 1877 season, when they entered the Welsh Cup for the first time.  The club entered two other competitions (The Cheshire Senior Cup in 1879 and the FA Cup in 1882) before finally playing league football in The Combination in 1890, for which they were founding members.  They became founding members of the Football League Second Division in 1892, where the club remained for two seasons, and are the only two seasons in the club's history where they have played professionally and in the Football League.  In the 1894 season, they returned to amateur, regional football when they rejoined the Combination.  Two season in the Cheshire League followed until the turn of the century, when Northwich joined the Manchester League in 1900, when they finished as runners-up.  Two seasons later, for the first time, they won a league trophy as winners of the Manchester League in 1902.  They departed the Manchester League in 1912 when they joined the second division of the Lancashire Combination, finishing 4th in the first season, which ensured their promotion to the first division.  In 1919, they became founder members of the Cheshire County League, where they remained until the 1968 season, winning the league just once in the 1956–57 season.  Following their departure from the Cheshire County League, they became founder members of the Northern Premier League.  In 1979, they founded yet another league, the Alliance Premier League (now known as the Football Conference, where they remained until their relegation in the 2004–05 season.  During their time in the Conference, they won the FA Trophy in the 1983–84 season, and finished runners-up twice in 1982 and 1995.  They returned to the Conference National at their first attempt when they won the Conference North in the 2005–06 season.  However, ongoing financial issues in the latter part of the 2000s saw them relegated twice in two season; in 2009 they were relegated back to the Conference North and then again the following season to the Northern Premier League Premier Division, where they are competing for the current season.

2006–07 FA Premier League: The 2006–07 FA Premier League (known as the FA Barclays Premiership for sponsorship reasons) was the 15th season of the FA Premier League since its establishment in 1992.  The season started on 19 August 2006 and concluded on 13 May 2007.

2005–06 FA Premier League: The 2005–06 FA Premier League (known as the FA Barclays Premiership for sponsorship reasons) began on 13 August 2005, and concluded on 7 May 2006.  The season saw Chelsea retain their title after defeating Manchester United 3–0 at Stamford Bridge towards the end of April.  On the same day, West Bromwich Albion and Birmingham City were relegated, joining Sunderland in the Championship for the following season.

2005–06 Birmingham City F.C. season: The 2005–06 season was Birmingham City Football Club's 103rd season in the English football league system and their fourth in the Premier League.  Under the management of Steve Bruce, they finished in 18th position in the 20-team division, so were relegated to the Championship for 2006–07.  They entered the 2005–06 FA Cup at the third round and progressed to the sixth round (quarter-final), in which they suffered their heaviest ever FA Cup defeat, and their heaviest defeat at St Andrew's in any competition, losing 7–0 at home to Liverpool.  They also reached the quarter-final of the League Cup, in which they were eliminated by Manchester United.

1992–93 FA Premier League: The 1992–93 FA Premier League was the inaugural season of the Premier League, the top division of English football.  The season began on 15 August 1992 and ended on 11 May 1993.  The league was made up of the 22 clubs that broke away from The Football League at the end of the 1991–92 season.  The new league was backed up by a five-year, £305 million deal with Sky to televise Premier League matches.  In concept, the Premier League was identical to the old First Division of the Football League, which was now reduced to three divisions.

List of Sunderland A.F.C. seasons: Sunderland Association Football Club was founded in 1879 as Sunderland & District Teachers Association Football Club by James Allan.  They turned professional in 1885.  Sunderland won their first Football League championship in the 1891–92 season two years after joining the league.  They won the next Football League First Division on three occasions in four seasons; in 1892, 1893 and 1895, separated by a runner-up spot in 1894.  In the 1901–02 season, Sunderland won their fifth Football League First Division championship.  They came close to completing the "league and cup double" in the 1912–13 season, winning the league but losing to Aston Villa in the 1913 FA Cup Final.  The team's next success came in the 1935–36 season when they won the League Championship and also the Charity Shield.  They had not won the FA Cup until the 1936–37 season when they defeated Preston North End in the 1937 FA Cup Final.  Sunderland entered The Football League in 1890 and were not relegated from the top division until the 1957–58 season; a total of 58 seasons in the highest division of England.  Their next trophy came in the 1973 FA Cup Final as they beat Leeds United 1–0.  They reached the 1985 Football League Cup Final but finished as runners-up to Norwich City after being beaten 1–0.  In the 1986–87 season Sunderland were relegated to the Football League Third Division for the first time in their history under the management of Lawrie McMenemy, they however, returned to the second division the following season as champions–their lowest position in the English football league system.  Their first appearance in the Premier League came in the 1999–2000 season after being promoted as champions from Division One.  In winning promotion the club gained 105 points, which was a record at the time.  Sunderland gained just 15 points in the 2005-06 season, which set the record for the lowest number of points in a Premier League season, which has since been eclipsed by Derby County.

2000–01 FA Premier League: The 2000–01 FA Premier League (known as the FA Carling Premiership for sponsorship reasons) was the third season running which ended with Manchester United as champions and Arsenal as runners-up.  Sir Alex Ferguson became the first manager to win three successive English league titles with the same club.  Liverpool, meanwhile, managed a unique cup treble – winning the FA Cup, League Cup and UEFA Cup.  They also finished third in the Premier League and qualified for the Champions League; they had not played in the European Cup since the 1985 final at Heysel in which their fans were found responsible for the deaths of 39 spectators, and were given a six-year ban from European competition.  Nike replaced Mitre as manufacturer of the official Premier League match ball.

1997 FA Charity Shield: The 1997 FA Charity Shield (known as the Littlewoods FA Charity Shield for sponsorship reasons) was the 75th FA Charity Shield, an annual football match played between the winners of the previous season's Premier League and FA Cup competitions.  The match was played on 3 August 1997 at Wembley Stadium and contested by Manchester United, who had won the 1996–97 FA Premier League, and Chelsea, who had won the 1996–97 FA Cup.  Manchester United won the match 4–2 on penalties after the match had finished at 1–1 after 90 minutes.

1999–2000 FA Premier League: The 1999–2000 FA Premier League (known as the FA Carling Premiership for sponsorship reasons) was the eighth season of the FA Premier League, and Manchester United secured their sixth Premiership title.  Like the previous season, they lost only three league games all season.  Unlike in 1998–99 season, they won by a comfortable margin – 18 points as opposed to a single point.

Barclays: Barclays PLC is a British multinational bank and financial services company headquartered in London.  It is a universal bank with global reach, offering products and services across personal, corporate and investment banking, credit cards and wealth management.  It has operations in over 40 countries and employs approximately 120,000 people.  Barclays is organised into four core businesses: Personal & Corporate (Personal Banking, Corporate Banking, Wealth & Investment Management), Barclaycard, Investment Banking and Africa.

Supporting paragraphs: 2005–06 FA Premier League Barclays
Answer: London