Katie Mustard


After successfully completing pupillage, Katie joined 9 Bedford Row in October 2017. She regularly prosecutes and defends in the Crown Court, magistrates’ courts and youth courts. She also receives instructions to appear on behalf of charitable organisations, namely the RSPCA.

Background and expertise

Prior to joining chambers, Katie worked within the regulatory department at Kingsley Napley. She specialised in healthcare and educational regulatory matters. She has completed the relevant training to receive instructions as a case presenter for the Nursing and Midwifery Council (NMC).

Notable cases

R v ES

Following guilty pleas to a number of offences which were committed in the course of a suspended sentence Katie successfully persuaded the court to only activate the suspended sentence in part. Katie’s submissions had the effect of reducing a likely sentence of over two years down to a sentence of 18 months.

Crown Court at Chelmsford.

R v UN

Katie successfully defended a young client accused of ABH who was jointly charged with others. At trial Katie made an application to adduce the complainant’s bad character and this was admitted into evidence. She then cross-examined the complainant about the inconsistencies in his evidence and he accepted that his evidence differed from the account which he gave to the police.

Oxford Youth Court.

Read more Notable cases

R v CW

Katie successfully defended a client accused of possession of a bladed article. The charge was the client’s second such offence and, consequently, he was facing the mandatory minimum six month sentence if convicted. The client accepted possessing the knife but said that he had ‘good reason’ for doing so, namely he was homeless and needed it for cutting his tent ropes. The evidence and Katie’s submissions on this were accepted by the court and the client was acquitted of the charge.

Romford Magistrates Court.

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PROFILE: Katie Mustard

Year called



020 7489 2727


BPP (2014) - Bar Professional Training Course – Outstanding

Birmingham City University (2012) – LLB Law Hons – First-Class with Honours


The Honourable Society of the Inner Temple


Grade 1 prosecutor

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