Railways Pension Trustee Company chief executive Phil Willcock has quit the scheme after only 10 months to take up a position as head of AIG UK Life.
The Railways Pension Trustee Company - which runs the railway pension schemes through its subsidiaries RPMI and RPMI Railpen - said the process of appointing a new chief executive would now begin, supported by RPMI chairman Babloo Ramamurthy.
Willcock had begun work at RPMI at the begining of this year - joining from Aviva, where he had been, most recently, chief executive of Aviva Italy.
Commentating on Willcock's departure, Ramamurthy said: "We will be seeking to recruit a high calibre successor who will help deliver RPMI's mission of paying members' pensions securely, affordably and sustainably and provide support to the trustee of the Railways Pension Scheme."
Financial Conduct Authority (FCA) interim chief executive Chris Woolard is set to leave the FCA after seven years at the regulator.
Smart has promoted chief operating officer (COO) Jamie Fiveash to the role of UK chief executive (CEO).
Trish Houston has been appointed as chief operating officer (COO) at Law Debenture and will also join its board as an executive director.
The UK Sustainable Investment and Finance Association (UKSIF) has appointed James Alexander as its chief executive officer (CEO).