Deanna Heer



Appointed Junior Treasury Counsel by the Attorney General in 2015Deanna is an experienced criminal barrister who is regularly instructed in the most serious cases. She frequently appears before the Court of Appeal and advises the Law Officers in respect of unduly lenient sentences.

For many years, Deanna has also specialised in health and safety law, for which she is an A List advocate. She also appears at inquests and before professional disciplinary tribunals.

Deanna is ranked in Chambers and Partners as a leading junior in crime and health and safety law:

"Continues to be sought after by public bodies and private sector clients alike for he expertise in investigations, prosecutions and inquests." C&P 2016.

“She’s very fair and prosecutes in a clear way. She sticks to her guns.” C&P 2015.

“Experienced in complex criminal cases, she can find a practical path through the most difficult matters” . C&P 2014.

“Her wider crime skills bring a lot to the table when dealing with health and safety cases. She understands juries and judges very well and in court she is in her element”. C&P 2013.

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Homicide and serious violence

Organised crime


Health and Safety


Professional Discipline