Question: When did daylight saving start in the country which contains the headquarters of a company at 25 North Colonnade?

full_context: Document 1: Daylight saving time in the United States: In the U.S., daylight saving time starts on the second Sunday in March and ends on the first Sunday in November, with the time changes taking place at 2: 00 a.m. local time. With a mnemonic word play referring to seasons, clocks ``spring forward, fall back ''-- that is, in springtime the clocks are moved forward from 2: 00 a.m. to 3: 00 a.m. and in fall they are moved back from 2: 00 a.m. to 1: 00 a.m. Daylight saving time lasts for a total of 34 weeks (238 days) every year, about 65% of the entire year.
Document 2: Consumer Financial Protection Bureau: Consumer Financial Protection Bureau Agency overview Formed July 21, 2011; 6 years ago (2011 - 07 - 21) Jurisdiction United States Headquarters Washington, D.C. Employees 1,623 (2016) Annual budget US $605.9 million (FY 2016) Agency executives Richard Cordray, Director David Silberman, Deputy Director Key document Dodd -- Frank Wall Street Reform and Consumer Protection Act Website www.consumerfinance.gov
Document 3: 25 North Colonnade: 25 North Colonnade is a commercial building in Canary Wharf, London formerly occupied by the Financial Conduct Authority, after having been solely occupied by its predecessor, the Financial Services Authority (FSA) until early 2013. It is tall, with 15 floors. Built in 1991, its developer was the Canary Wharf Group, and its architect was Troughton McAslan.
Document 4: Martin Wheatley: Martin Wheatley is a British financier, formerly managing director of the Consumer and Markets Business Unit of the Financial Services Authority in the UK, and is the former CEO of the Financial Conduct Authority.
Document 5: British Summer Time: Year Start End 2015 29 March 25 October 2016 27 March 30 October 2017 26 March 29 October 2018 25 March 28 October 2019 31 March 27 October 2020 29 March 25 October 2021 28 March 31 October
Document 6: Economy of the United Kingdom: Government involvement in the British economy is primarily exercised by Her Majesty's Treasury, headed by the Chancellor of the Exchequer, and the Department for Business, Energy and Industrial Strategy. Since 1979 management of the economy has followed a broadly laissez - faire approach. The Bank of England is the UK's central bank and its Monetary Policy Committee is responsible for setting interest rates, quantitative easing, and forward guidance.
Document 7: British Summer Time: BST begins at 01: 00 GMT on the last Sunday of March and ends at 01: 00 GMT (02: 00 BST) on the last Sunday of October. Since 22 October 1995, the starting and finishing times of daylight saving time across the European Union have been aligned -- for instance Central European Summer Time begins and ends on the same Sundays at exactly the same time (that is, 02: 00 CET, which is 01: 00 GMT). Between 1972 and 1995, BST began and ended at 02: 00 GMT on the third Sunday in March (or second Sunday when Easter fell on the third) and fourth Sunday in October.
Document 8: Citigroup Centre, London: 25 Canada Square, or Citigroup Centre 2, stands at and, alongside HSBC Tower (with which it was built in tandem), is the joint 4th-tallest building in the United Kingdom (behind The Shard, One Canada Square and Heron Tower). Designed by César Pelli & Associates, construction of the 45-storey tower - undertaken by Canary Wharf Contractors - began in 1998 and was completed in 2001, with Citigroup leasing the building from the outset. The building was bought by RBS in 2004 along with 5 Canada Square (leased to Bank of America) for $1.12 billion. Subsequently, on 2 July 2007, CGC2 was individually sold to a joint venture between Quinlan Private and PropInvest for £1 billion (US$2 billion). Citigroup pay £46.5 million a year in rent for the tower, generating a yield of 4.6% to the owners. The east facing side of 25 Canada Square up to level 40 is configured for use by tenants.
Document 9: Riverside South (Canary Wharf): Riverside South is a proposed skyscraper development in Canary Wharf, London. Some below ground-level work was completed by 2014 on behalf of investment bank J.P. Morgan & Co., which bought a 999-year lease on the site with the intention of making the building its London office, but the firm has now moved into an existing Canary Wharf building. Future plans for Riverside South have not been publicised.
Document 10: Time in Germany: The time zone in Germany is Central European Time (Mitteleuropäische Zeit, MEZ; UTC + 01: 00) and Central European Summer Time (Mitteleuropäische Sommerzeit, MESZ; UTC + 02: 00). Daylight saving time is observed from the last Sunday in March (02: 00 CET) to the last Sunday in October (03: 00 CEST). The doubled hour during the switch back to standard time is named 2A (02: 00 to 03: 00 CEST) and 2B (02: 00 to 03: 00 CET).
Document 11: Martin Beaumont: Martin Dudley Beaumont CVO (born 6 August 1949) is a British businessman who was, until October 2007, the chief executive of the Co-operative group, today a £9.4 billion turnover enterprise employing in excess of 85,000 people across a diverse portfolio of businesses.
Document 12: London: In the dense areas, most of the concentration is via medium- and high-rise buildings. London's skyscrapers such as 30 St Mary Axe, Tower 42, the Broadgate Tower and One Canada Square are mostly in the two financial districts, the City of London and Canary Wharf. High-rise development is restricted at certain sites if it would obstruct protected views of St Paul's Cathedral and other historic buildings. Nevertheless, there are a number of very tall skyscrapers in central London (see Tall buildings in London), including the 95-storey Shard London Bridge, the tallest building in the European Union.
Document 13: Summer time in Europe: European Summer Time begins at 01: 00 UTC / WET (02: 00 CET, 03: 00 EET) on the last Sunday in March and ends at 01: 00 UTC (02: 00 WEST, 03: 00 CEST, 04: 00 EEST) on the last Sunday in October each year; i.e. the change is made at the same absolute time across all time zones.
Document 14: William Miller (cashier): William Miller was the Chief Cashier of the Bank of England from 1864 to 1866. Miller was replaced as Chief Cashier by George Forbes.
Document 15: One Raffles Quay: Designed by Kohn Pedersen Fox, One Raffles Quay (ORQ) consists of the 50-storey North Tower and the 29-storey South Tower, totalling about 1.3 million square feet of office space. The building was purpose-built for banking and financial corporations in August 2006.
ground_truth: Since 22 October 1995
sub_queries: What team uses 25 North Colonnade? Answer: Financial Conduct Authority
Financial Conduct Authority >> country Answer: UK
when did daylight saving start in the UK Answer: Since 22 October 1995