As of 2015, O'Brien was paid a salary of between £160,000 and £164,999 by the department, making her one of the 328 most highly paid people in the British public sector at that time.[6]
^"New Year honours list 2011 : Knights". The Guardian. 31 December 2010. Retrieved 31 January 2016. Companion (CB) [...] Ms Una O'Brien, formerly dir-General, policy and strategy, Department of Health.
^"Queen's birthday honours list 2015: Knights". The Guardian. 12 June 2015. Retrieved 31 January 2016. DCB : Ms Una O'Brien, CB. Permanent secretary, Department of Health. For public service, particularly to Healthcare (London)
^ abBrecknell, Suzannah (23 February 2011). "Interview: Una O'Brien". Civil Service World. Archived from the original on 23 October 2014. Retrieved 18 October 2014.