Emma Douglas was named managing director, workplace savings at Aviva, a spokeswoman confirmed.
Ms. Douglas will replace Matt McGill, who led the workplace savings business on an interim basis following the departure of Colin Williams. Mr. Williams was appointed managing director, pensions and savings, at Phoenix Group in January.
Based in London, Ms. Douglas will report to Rob Barker, managing director, U.K. savings and retirement. The spokeswoman said the firm will confirm her start date shortly.
"We see big opportunities to continue to grow our business and Emma's knowledge and experience in the market will further strengthen our team," Mr. Barker said in a news release.
The workplace savings business provides contract and trust-based retirement plans as well as access to other savings and investment products.
Aviva has a total £535 billion ($738.9 billion) in assets under management.
Ms. Douglas was head of defined contribution at Legal & General Investment Management. She was at the firm for seven years. Rita Butler-Jones, head of DC sales, and Stuart Murphy, head of DC client management, will take on her responsibilities, a statement said. LGIM is looking to appoint a successor to lead the DC business.