Marshall will take on the newly created role to raise the profile of the group with key media stakeholders.
He was previously head of policy and comms at the Association of British Travel Agents (ABTA), before leaving the organisation through redundancy in 2009.
Marshall formerly worked as director of public affairs for the Institute of Directors, government relations manager for Unilever and public affairs manager for Kingfisher Group.
He has also worked in a number of Whitehall and Westminster media relations roles for the Conservative Party.
Marshall commented: ‘I am savouring the challenge of working with such an established organisation as Arbuthnot Banking Group and will be looking to raise the bank’s profile at every opportunity. These are challenging times for anyone working in the financial services sector and I hope to add value for money and increase Arbuthnot Latham’s presence in the private banking arena.’
Henry Angest, chairman and CEO of Arbuthnot, said: ‘David comes highly recommended and is tasked to raise our profile as we look to further enhance our reputation via targeted media activity. David’s previous experience with FTSE 100 companies such as Kingfisher and Unilever and his time in government communications will stand him in good stead.’
Arbuthnot owns private bank Arbuthnot Latham & Co, investment banking arm Arbuthnot Securities and retail bank Secure Trust Bank.
Arbuthnot Latham was first established in the UK more than 175 years ago.