Andrew Warwick-Thompson will step down as executive director for regulatory policy at The Pensions Regulator to join the £40bn LGPS Central as chief executive.
Warwick-Thompson joined the regulator's board as executive director in 2013 and has been responsible for shaping regulatory policy across the watchdog's work across trust-based schemes and has also overseen its risk and data functions.
The regulator said he will leave the organisation in July and said a successor would be announced in "due course".
The move comes just days after the outgoing Pensions and Lifetime Savings Association (PLSA) chief executive Joanne Segars was appointed as non-executive chairwoman of the local government pension scheme pool.
Segars, who will leave the PLSA after 12 years next month, will oversee the nine-fund pool, which has around £40bn of assets spread across 870,000 members and 1,900 employers.
LGPS Central is one of eight local government pools being set up ahead of a government deadline in April 2018. All 89 English and Welsh LGPSs must pool their investments in a bid to drive down costs and improve efficiencies. Part of this process involves appointing an independent chair.
The LGPS Central Pool will bring together funds from Cheshire, Leicestershire, Shropshire, Staffordshire, the West Midlands, Derbyshire, Nottinghamshire, Worcestershire, and the West Midlands Integrated Transport Authority.
The pool predicts aggregating assets and investments will see it make around £200m of savings by 2034, net of transition, set-up, and operating costs.