Stewart Price leaves his position at the MoD on Friday. He will be replaced by an existing team speechwriter.
Price is to join Saudi Aramco, where he will be a speechwriter for the Saudi Arabian oil company’s chief executive Khalid Al-Falih.
Price declined to comment on his appointment, but the MoD press office confirmed the personnel changes.
He has been at the MoD since 2009, during which time he has worked as a speechwriter to the MoD’s ministers, including minister of state for the armed forces Nick Harvey, and Gerald Howarth, the minister for international security strategy.
Price does not generally write for the Secretary of State.
Price’s previous roles include first secretary (market analysis), defence equipment, at the British Embassy in Washington DC, and HM consul at the British Consulate-General in Chicago.
The news comes as the MoD has been revealed in the media to be axing another 2,900 soldiers, taking the total down to about 97,000 – understood to be the smallest number since the Crimean War.