Simon Blundell will become manager of the Corporate Bond fund. Blundell joined BlackRock from Aviva Investors last month, where he was head of institutional credit portfolio management.
Shuttleworth managed the Corporate Bond fund from August 2004 until April 2007.
The fund’s management was then passed on to Daniel McKernan, but Shuttleworth resumed control after McKernan left for Scottish Widows Investment Partnership in 2010.
Winship will also oversee Blundell's management of the Corporate Bond fund.