Question: When was the town, located approximately 45 miles north-west of London where Gerald Eve LLP has offices, formally designated as a new town?

full_context: Document 1: Milton Keynes Dons F.C.: Milton Keynes Dons Football Club ( ; usually abbreviated to MK Dons) is a professional association football club based in Milton Keynes, Buckinghamshire, England. The result of Wimbledon F.C.'s controversial relocation to Milton Keynes from south London in September 2003, the club officially considers itself to have been founded in 2004, when it adopted its present name, badge and home colours. As of the 2017–18 season its first team plays in League One, the third tier of English football.
Document 2: Gerald Eve: Gerald Eve LLP is a real estate advisory business headquartered in London, United Kingdom. The firm has offices in West End of London, The City of London, Glasgow, Birmingham, Leeds, Manchester, Milton Keynes, Cardiff and West Malling.
Document 3: London Docklands Development Corporation: The London Docklands Development Corporation (LDDC) was a quango agency set up by the UK Government in 1981 to regenerate the depressed Docklands area of east London. During its eighteen-year existence it was responsible for regenerating an area of 8.5 sqmi in the London Boroughs of Newham, Tower Hamlets and Southwark. LDDC helped to create Canary Wharf, Surrey Quays shopping centre, London City Airport, ExCeL Exhibition Centre and the Docklands Light Railway, bringing more than 120,000 new jobs to the Docklands and making the area highly sought after for housing. Although initially fiercely resisted by local councils and residents, today it is generally regarded as having been a success and is now used as an exemplar of large-scale regeneration, although tensions between older and more recent residents remain.
Document 4: Milton Keynes Development Corporation: Milton Keynes Development Corporation was established on 23 January 1967 to provide the vision and execution of a "new city", Milton Keynes, that would be the modern interpretation of the Garden city movement concepts first expressed by Ebenezer Howard 60 years earlier.
Document 5: Newton Leys: Newton Leys is a district that covers the southern tip of Bletchley; a constituent town of Milton Keynes in Buckinghamshire, on the boundary of the Borough of Milton Keynes and Aylesbury Vale. At the 2011 Census the population of the district was included in the civil parish of Bletchley and Fenny Stratford. The area of Newton Leys within the Milton Keynes boundary forms a part of Bletchley and Fenny Stratford civil parish and is separated from Central Bletchley, Water Eaton and the Lakes Estate by the West Coast Main Line. The area of Newton Leys within the Aylesbury Vale boundary forms a part of the Stoke Hammond civil parish, although the village of Stoke Hammond is situated on the other side of the A4146
Document 6: Sport in Milton Keynes: Sport in Milton Keynes covers a range of professional and amateur sport in the Borough of Milton Keynes. There are professional teams in football (MK Dons), in motorsport (Red Bull Racing ) and in ice hockey (MK Lightning). The National Badminton Centre, and the Marshall Milton Keynes Athletic Club train professional and amateur athletes. Most other sports feature at amateur level although there are semi-professional teams in rugby union and football among other sports. There is an international-standard karting track owned by Daytona Motorsport.
Document 7: Gerard Lyons: Gerard Lyons (born 31 March 1961 in Kilburn, London) is a British economist and writer. He is an expert on the world economy, global financial markets and on economic and regulatory policy, focusing on international banking. Lyons was the co-founder of 'Economists for Brexit' and played a leading role in the UK European Union Referendum. From January 2013 to May 2016 he was Chief Economic Advisor to the Mayor of London, Boris Johnson. Prior to that, Lyons spent 25 years in the City, most recently as Chief Economist and Head of Global Research at Standard Chartered Bank. He is an author and public speaker, as well being a regular commentator for the press and television, including the BBC, ITV, Bloomberg, "The Times", "The Telegraph" and Sky News. Currently, Lyons is Chief Economic Strategist at Netwealth Investments. Additionally, he is a Senior Economic Advisor to Parker Fitzgerald and a Senior Advisor to DealGlobe. He is involved with organisations promoting UK education, UK trade and the City of London: Advisory Board of Warwick University Business School; Advisory Board of the Grantham Institute at the London School of Economics and Imperial College, University of London; Vice-Chairman of the 48 Group, boosting UK–China ties, Committee Member of the Royal Society of Asian Affairs; Committee Member of the Hong Kong Association; Council Member of Open Europe and Commissioner on the London Stansted Growth Commission. He has recently stepped down from being a Board Member of CityUK.
Document 8: AG Real Estate: AG Real Estate (former Fortis Real Estate) is a wholly owned subsidiary of AG Insurance (Ageas) and the largest real estate group in Belgium, headquartered in Brussels. AG Real Estate has a portfolio under management of over €6 billion that incorporates office buildings, shopping malls, logistics properties, residential properties and shares in real estate investment funds, both listed and unlisted.
Document 9: Oxford-Cambridge Arc: The Oxford-Cambridge Arc is a notional arc of agricultural and urban land at about 75km (about 50 miles) radius of London, southern England. It runs between the two English university towns of Oxford and Cambridge via Milton Keynes and other important settlements in Cambridgeshire, Bedfordshire, Buckinghamshire and Oxfordshire, at the northern rim of the London commuter belt. It is significant only in economic geography, with little physical geography in common.
Document 10: Milton Keynes City F.C.: The name Milton Keynes City Football Club (commonly abbreviated to MK City) refers to two defunct English football clubs, both of which were non-League sides based in or around Milton Keynes, Buckinghamshire. The first, Bletchley Town FC, changed its name to Milton Keynes City in 1974, and used the name until its dissolution in 1985. The second, originally called Mercedes-Benz, became MK City in 1998, and retained the name until its own demise in 2003, coinciding with the relocation of Wimbledon F.C. to Milton Keynes.
Document 11: Slater and Gordon Lawyers: Slater and Gordon is a multinational law firm headquartered in Australia employing over 2,500 people worldwide. In 2007, Slater and Gordon became the first law firm in the world to go public. The firm is Australia's largest consumer law firm by total revenue. In 2012, Slater and Gordon entered the UK market with the acquisition of several UK based law firms, and has since become one of the UK's largest consumer law firms. In 2014 the firm was ranked as the 7th largest international law firm operating in the UK by revenue. In 2014, the firm's UK revenue exceeded £100 million for the first time, with a reported 119% increase on the previous year's turnover. The firm was founded in Melbourne, Victoria in 1935 by a barrister and solicitor from Irymple, Victoria, Hugh Lyons Gordon, and Labor politician Bill Slater.
Document 12: Milton Keynes: Milton Keynes ( ), locally abbreviated to MK, is a large town in the Borough of Milton Keynes, Buckinghamshire, of which it is the administrative centre. It was formally designated as a new town on 23 January 1967, with the design brief to become a "city" in scale. It is located about 45 mi north-west of London.
Document 13: Two Mile Ash: Two Mile Ash is a district in north west Milton Keynes, two miles south of Stony Stratford, just off Watling Street. The district was named after the Two Mile Ash toll gate on Watling Street. It is one of the larger districts, but a large part of its area is taken up by an 18-hole golf course. Consequently, many of the streets here are named after famous golf courses. The district was one of the first to be built in the (mainly) private housing period of the development of Milton Keynes.
Document 14: Upper Grosvenor Street: Upper Grosvenor Street is a historic street in Mayfair, London, United Kingdom. It runs from the Grosvenor House Hotel off Park Lane to the Embassy of the United States off Grosvenor Square. The Embassy of Monaco is located at number 7. Odey Asset Management, a hedge fund run by Crispin Odey, is located at number 12.
Document 15: Ernst &amp; Young: EY (formerly Ernst & Young) is a multinational professional services firm headquartered in London, England. EY is one of the largest professional services firms in the world and is one of the "Big Four" accounting firms.
ground_truth: 23 January 1967