Angela Nash and Chris Gudgeon will add depth and further skills to the boards, says chair.
Lyndsey Francis has been appointed to the role.
Lees Seymour and Roz Buick have been appointed.
Jennifer Hambleton and Isaac Stewart have been promoted.
Internal Spark promotion for Richard Adams.
Founder of consultancy company North, Gavin Becker joins the company.
Steffan Berridge is confirmed in the role.
Brent Robinson has been appointed to the board.
Paul Linton joins from Callaghan Innovation.
Akash Mittal is the new chief information officer.
