Chemring’s chair will join the Keller Group board as a non-executive director with effect from 16 December this year.

William Rucker will join the board as a NED and take over from Tim Score as chair after the company’s AGM in July.

Jeremy Maiden joins the board as a non-executive director today, with Simon Lowth taking up his role on 1 January.

Clive Bannister has been appointed chair designate and a non-executive director of the board of the insurance group.

Sir Ian Cheshire will step down from the board of BT Group in order to take over as Landsec’s chair from Cressida Hogg CBE.

Helen Mahy CBE will join the board of the FTSE 250-listed renewable energy investment company next year as chair designate.