Question: Rock'n Rollers were shell shaped crisps made by a British company that has been a wholly owned subsidiary of what company since 2006?

Context articles: Rock 'n' Roller Crisps
Optus
Shell Oil Company
John Hancock Financial
Golden Wonder
Murrin Murrin Joint Venture
Copperweld Corp. v. Independence Tube Corp.
Sun Hung Kai Financial
Johnsonburg, Kane, Warren and Irvine Railroad
Kirloskar Brothers

Rock'n Rollers were shell shaped crisps made by Golden Wonder in the UK during the 1970s.
 They were named after the rock and roll revival in the 1970s.
 They were available in Salt & Vinegar and Cheese & Onion flavours.
 During the 1980s, Golden Wonder ceased to make them.
Singtel Optus Pty Limited is the second largest telecommunications company in Australia.
 It is a wholly owned subsidiary of SingTel (a company headquartered in Singapore) since 2001.
 The company primarily trades under the Optus brand, while maintaining several wholly owned subsidiary brands, such as Virgin Mobile Australia in the mobile telephony market, Uecomm in the network services market and Alphawest in the ICT services sector.
Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell, a multinational "oil major" of Anglo-Dutch origins, which is amongst the largest oil companies in the world.
 Approximately 22,000 Shell employees are based in the U.S.
 The U.S. head office is in Houston, Texas.
 Shell Oil Company, including its consolidated companies and its share in equity companies, is one of America's largest oil and natural gas producers, natural gas marketers, gasoline marketers and petrochemical manufacturers.
John Hancock Financial is an informal term for a United States insurance company which existed, in various forms, from its founding on April 21, 1862, until its acquisition in 2004 by the Canadian insurance company Manulife Financial.
 It was named in honor of John Hancock, a prominent Patriot.
 The company continues to operate as a wholly owned subsidiary of Manulife and its headquarters remains in Boston, Massachusetts.
 John Hancock Financial Network (JHFN) is the retail distribution company of John Hancock Life Insurance Company, U.S.A., which is a wholly owned subsidiary of Manulife Financial Corporation.
Golden Wonder is a British company that manufactures snack foods, most notably crisps.
 These include Ringo's, Golden Wonder and Transform-A-Snack.
 Since 2006, it has been a wholly owned subsidiary of the Northern Irish company Tayto, after being rescued out of administration.
The Murrin Murrin Joint Venture is a major nickel-cobalt mining operation being conducted in the North Eastern Goldfields, approximately 45 km east of Leonora, Western Australia.
 The Project was a joint venture between Murrin Murrin Holdings Pty Ltd, a wholly owned subsidiary of Minara Resources Ltd (whose share is 60%) and Glenmurrin Pty Ltd, a wholly owned subsidiary of Glencore International AG, which had a 40% share but also owned 70% of Minara.
 As of November 2011, Minara Resources was fully acquired and is now wholly owned by Glencore International.
 The mine opened in 1999.
Copperweld Corp. v. Independence Tube Corp., 467 U.S. 752 (1984) , is a major US antitrust law case decided by the Supreme Court concerning the Pittsburgh firm Copperweld Corporation and the Chicago firm Independence Tube.
 It that held that a parent company is incapable of conspiring with its wholly owned subsidiary for purposes of Section 1 of the Sherman Act because they cannot be considered separate economic entities.
 Section 1 of the Sherman Act states that "Every contract, combination in the form of trust or otherwise, or conspiracy, in restraint of trade or commerce among the several States, or with foreign nations, is declared to be illegal."
 However, for a condition of conspiracy to exist, there must be at least two parties involved.
 "Copperweld" held that separate incorporation was not enough to render a parent and its subsidiary capable of conspiring, since forcibly the economic interests of a wholly owned subsidiary must be those of its parent.
 It does not apply to partially owned subsidiaries.
Sun Hung Kai Financial Limited (SHKFL), is a 70%-owned subsidiary of Everbright Securities Company Limited (SSE: 601788, HKEX: 6178, “Everbright Securities”).
 With its foundation dating back to 1969 when Fung King Hey, Kwok Tak Seng and Lee Shau Kee teamed up to start the Sun Hung Kai partnership, SHKFL was a wholly owned subsidiary of Sun Hung Kai & Co. Limited (SEHK: 86,　“SHKCO”).
 SHKCO is chaired by Lee Seng Huang and controlled by the Lee & Lee Trust following the acquisition of the Fung family’s equity interest in the company by Allied Properties (H.K.) Limited via its wholly owned subsidiary in 1996.
 In June 2015, Everbright Securities acquired 70% of SHKFL from SHKCO, making SHKFL a subsidiary of Everbright Securities since then.
 SHKCO remains a 30% shareholder of SHKFL.
The Johnsonburg, Kane, Warren and Irvine Railroad (reporting mark JKWI) was a railroad company in Pennsylvania, United States, formed on May 24, 1982, by Sloan Cornell who also owned the Knox and Kane Railroad.
 The JKWI was the designated operator of the Irvine, Warren, Kane & Johnsonburg Railroad, that was a partnership of Brock Railroad (a wholly owned subsidiary of Warren Car Company), Irvine Railroad (a wholly owned subsidiary of National Forge Company) and Struthers Wells Inter-American Corporation (a subsidiary of Struthers Wells), all three being Pennsylvania corporations, and had acquired from Conrail the following railroad line segments: MP 58.52 to MP 66.7 (Irvine to Warren) and MP 92.5 to MP 111.0 (Kane to Johnsonburg).
Kirloskar Brothers Limited (KBL) is a pump manufacturing company involved in engineering and manufacture of systems for fluid management.
 Established in 1888 and incorporated in 1920, KBL is the flagship company of the $2.5 billion Kirloskar Group.
 The market leader in fluid management, KBL provides fluid management solutions for large infrastructure projects in the areas of water supply, power plants, irrigation, oil & gas and marine & defence.
 The company engineers and manufactures industrial & petrochemical, agriculture & domestic pumps, valves and hydro turbines.
 In 2003 KBL acquired SPP Pumps (UK), United Kingdom and established SPP INC, Atlanta, USA, is as a wholly owned subsidiary of SPP, UK and expanded its international presence.
 In 2007, Kirloskar Brothers International B.V., The Netherlands and Kirloskar Brothers (Thailand) Ltd, a wholly owned subsidiary in Thailand were incorporated.
 In 2008, KBL incorporated Kirloskar Pompen B.V. which acquired Rodelta Pumps International B.V. in 2015 in The Netherlands.
 In 2010 KBL acquired Braybar Pumps, South Africa and in 2012 it established a manufacturing facility in Egypt as SPP MENA.
 KBL has joint venture cooperation with Ebara, Japan since 1988 under Kirloskar Ebara Pumps Ltd.
 Kirloskar Corrocoat Private Limited is joint venture cooperation with Corrocoat, UK since 2006.
 KBL acquired The Kolhapur Steel Limited in 2007, Hematic Motors in 2010.