David MacBrayne Ltd. has a number of subsidiaries, including ferry operators CalMac Ferries Ltd. and NorthLink Ferries Ltd., and a human resource subsidiary, David MacBrayne HR (UK) Ltd.
David MacBrayne Ltd. has Scottish Ministers as its sole shareholder.
In 2009, management restructuring took place under which the role of David MacBrayne Ltd. was extended to include both group policy and strategic matters as well as providing some shared services to all group companies.