Question: Where is the sponsor of the Johnnie Walker Championship at Gleneagles based?

Context paragraphs:
Johnnie Walker Championship at Gleneagles: The Johnnie Walker Championship at Gleneagles was a European Tour golf tournament which was played at the Gleneagles Hotel in Scotland.  The tournament was founded in 1999 as the Scottish PGA Championship, and despite maintaining the same sponsor, has since changed name on several occasions, as Diageo has looked to promote different brands.  It was last contested over the PGA Centenary Course, formerly called the Monarch's Course, venue for the 2014 Ryder Cup matches.  It was last played in 2013

1996–97 Thailand Soccer League: Between 1916 and 1995, the Kor Royal Cup was the top level of club football competition.  In 1996 the Thai Premier League (official name: Johnnie Walker Thailand Soccer League) was established by the Football Association of Thailand, sponsored by whiskey manufacturing brand Johnnie Walker.

Johnnie Walker Cambodian Open: The Johnnie Walker Cambodian Open is an Asian Tour golf tournament.  It was played for the first time in 2007 from November 29 to December 2 at the Phokeethra Country Club in Cambodia.  The purse was US$300,000.  The tournament's main sponsor is Johnnie Walker.  The Cambodian Open is the first professional golf tournament hosted in Cambodia.

Johnnie Walker: Johnnie Walker is a brand of Scotch whisky owned by Diageo that originates from the Scottish town of Kilmarnock, a large burgh in East Ayrshire, which is where the brand's creator, John Walker began making and distilling the whisky in the Johnnie Walker Bond located in the town centre.  It is the most widely distributed brand of blended Scotch whisky in the world, sold in almost every country, with annual sales of the equivalent of over 223.7 million 700 ml bottles in 2016 (156.6 million litres).

Frederic John Walker: Captain Frederic John Walker, (3 June 1896 – 9 July 1944) (his first name is given as Frederick in the Oxford Dictionary of National Biography and some London Gazette entries) was a Royal Navy officer noted for his exploits during World War II.  Walker was the most successful antisubmarine warfare commander during the Battle of the Atlantic and was known more popularly as Johnnie Walker (for the Johnnie Walker brand of whisky).

McLaren MP4-26: The McLaren MP4-26 was a Formula One racing car designed by McLaren for the 2011 Formula One season.  It was driven by Lewis Hamilton and Jenson Button, the and World Drivers' Champions, respectively.  The car was launched on 4 February at Potsdamer Platz located in Berlin, Germany, shortly after the first test session of the season in Valencia.  McLaren test driver Gary Paffett, Lewis Hamilton and Jenson Button drove an interim version of the car's predecessor, the MP4-25 at the first tests to get experience with the final tyre compounds provided by new tyre supplier Pirelli.  Right before the 2011 Singapore Grand Prix, McLaren signed a new sponsor: Lucozade and the logo replaced the Johnnie Walker logo on the sides of the rear wing, thus shifting the Johnnie Walker logo to the back of the rear wing, which changed from red to silver in colour.

Diageo: Diageo plc ( or ) is a British multinational alcoholic beverages company, with its headquarters in London, England.  It was the world's largest distiller until being overtaken by China's Kweichow Moutai on 9 April 2017.  It is also a major producer of beer.

Thomas William Walker: Thomas William Walker, ONZM (2 July 1916 – 8 November 2010) was an Anglo-New Zealand soil scientist.  He was known as "Tom" or "John" or "Johnnie" after the Johnnie Walker brand of whisky, or "The Prof" to students and latterly viewers of "Maggie's Garden Show".  To his family he was "Baba".

Johnnie Walker Classic: The Johnnie Walker Classic was a European Tour golf tournament which was played in the Asia-Pacific region.  Johnnie Walker is a brand name and the owners have a long history of tournament sponsorship.  They also sponsored the Johnnie Walker Championship at Gleneagles which was a European Tour event played in Scotland.  The event was originally called the Johnnie Walker Asian Classic.  There was a tournament already called the Johnnie Walker Classic in Australia, but when that event ceased in 1992, the word Asian was dropped from the name.

John Walker (grocer): John (Johnnie) Walker (1805–1857) was a Scottish grocer, who originated what would become one of the world's most famous whisky brand names, Johnnie Walker, despite the fact he was himself a teetotaler.

Supporting paragraphs: Johnnie Walker Championship at Gleneagles Diageo
Answer: London, England