Gartmore Group Limited was a British-based investment management business.

The company was founded in 1969 by British & Commonwealth and acquired by Banque Indosuez in 1989.

[2] It was then bought by NatWest in 1996 and by Nationwide Mutual Insurance Company in 2000 before becoming part of the investment portfolio of Hellman & Friedman, a private equity fund, in 2006.

[3] Henderson Group announced its acquisition of the company in January 2011.

[4] The company had £22.2 billion of assets under management as at 31 December 2009.