July 20 (Reuters) - Serco Group Plc
* Serco appoints Blackrock for a 1.5 bln stg LDI mandate
* Trustees of Serco pension scheme have appointed Blackrock to manage its liability driven investing (LDI) portfolio
* Appointment follows a competitive tender process, coordinated by scheme’s investment consultant
* LDI strategy has now been aggregated into one portfolio managed solely by Blackrock Further company coverage:
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