Question: What company was established in 1845 and was headed by Julian Roberts until October 2015?

full_context: Document 1: Julian Roberts: Richard Julian Roberts FSA (18 May 1930 – 20 October 2010) was a British librarian, bibliographer, and scholar.
Document 2: JSE Limited: JSE Limited (previously the JSE Securities Exchange and the Johannesburg Stock Exchange) is the oldest existing and largest stock exchange in Africa. It is situated at the corner of Maude Street and Gwen Lane in Sandton, Johannesburg, South Africa. In 2003 the JSE had an estimated 472 listed companies and a market capitalisation of US$182.6 billion (€158 billion), as well as an average monthly traded value of US$6.399 billion (€5.5 billion). As of 31 December 2013, the market capitalisation of the JSE was at US$1,007 billion.
Document 3: Old Mutual: Old Mutual plc is an international investment, savings, insurance, and banking group. Established in 1845 in South Africa, it had more than 19 million customers and £394.9 billion assets under management as of 31 December 2016. It is listed on the London Stock Exchange and Johannesburg Stock Exchange and is a constituent of the FTSE 100 Index.
Document 4: Bryan Robson: Bryan Robson OBE (born 11 January 1957) is an English football manager and a former player. He began his career with West Bromwich Albion in 1972 before moving to Manchester United in 1981 where he became the longest serving captain in the club's history.
Document 5: Simon Robey: Sir Simon Christopher Townsend Robey (born July 1960) is a British investment banker and supporter of cultural organisations.
Document 6: Standard Life Aberdeen: Standard Life Aberdeen plc is an investment company with headquarters in Edinburgh and operations around the globe. In March 2017, Standard Life reached an agreement to merge with the investment company Aberdeen Asset Management. Standard Life was renamed Standard Life Aberdeen on 14 August 2017. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.
Document 7: HSBC: HSBC Holdings PLC is a British multinational banking and financial services holding company, tracing its origin to a hong in Hong Kong. It is the world's seventh largest bank by total assets and the largest in Europe with total assets of US$2.374 trillion (as of December 2016). It was established in its present form in London in 1991 by The Hongkong and Shanghai Banking Corporation Limited to act as a new group holding company. The origins of the bank lie mainly in Hong Kong and to a lesser extent in Shanghai, where branches were first opened in 1865. The HSBC name is derived from the initials of the Hongkong and Shanghai Banking Corporation. The company was first formally incorporated in 1866. The company continues to see both the United Kingdom and Hong Kong as its "home markets".
Document 8: Aberdeen Asset Management: Aberdeen Asset Management PLC is an international investment management group, managing assets for both institutions and private investors from offices around the world. Its head office is in Aberdeen, Scotland. The company was listed on the London Stock Exchange until 14 August 2017 when, as a result of a merger with Standard Life, it became a subsidiary of the renamed Standard Life Aberdeen.
Document 9: Mark Cutifani: Mark Cutifani (born 2 May 1958) is an Australian businessman and the current chief executive of diversified mining group, Anglo American plc. He was formerly CEO of South African gold mining company AngloGold Ashanti, a position he held from October 2007 until March 2013.
Document 10: Martin Gilbert (businessman): Martin James Gilbert FRSE (born 13 July 1955) is a British businessman, chief executive (CEO) of Aberdeen Asset Management, an international investment management company, which he co-founded in 1983. He was chairman of FirstGroup from 1 April 1995 to 1 January 2014. He became a patron of The Aberdeen Law Project in 2010.
Document 11: Union Investment: Union Investment (formal name Union Asset Management Holding AG) is the investment arm of the DZ Bank Group and part of the cooperative financial services network. It was founded in 1956 and is headquartered in Frankfurt.
Document 12: The Equitable Life Assurance Society: The Equitable Life Assurance Society (Equitable Life), founded in 1762, is a life insurance company in the United Kingdom. The world's oldest mutual insurer, it pioneered age-based premiums based on mortality rate, laying “the framework for scientific insurance practice and development”
Document 13: Bruce Hemphill: Jonathan Bruce Hemphill (born June 1963) is a South African businessman. He is the chief executive of Old Mutual, an international long-term savings group and FTSE 100 company, since 1 November 2015, succeeding Julian Roberts.
Document 14: Roberts AB: Roberts AB is the company that makes the syrup for the traditional Swedish drink julmust. The company was founded in 1910 by Harry Roberts and his father Robert Roberts (who died in 1932). The company is located in Örebro, Sweden and currently has 15 employees. The current owner is Göran Roberts, a grandson of Harry. They do not produce their own soft drinks, just the syrup. Apart from julmust they also make syrup for cola, various fruit drinks and Champis.
Document 15: Julian Roberts (businessman): Julian Victor Frow Roberts (born 7 June 1957) is a British businessman. He was the chief executive of Old Mutual plc, an international long-term savings group until October 2015.
ground_truth: Old Mutual