The force has an assistant chief officer responsible for finance and audit and another assistant chief officer responsible for HR matters.

BBC: Generic Humber bridge

The audit is also expected to reveal how a former assistant chief fire officer, Peter Craig, accepted a vehicle from car dealer Charles Hurst in 2009.

BBC: NI Fire Service paid unapproved bonuses to three staff

The audit is also expected to reveal how a former assistant chief fire officer accepted and retained a Land Rover from a Northern Ireland car dealer despite being told by his boss to return it.

BBC: NI Fire Service paid unapproved bonuses to three staff