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.

Katie also has a regulatory practice, appearing as a case presenter for the Nursing and Midwifery Council (NMC).

Background and expertise

Prior to joining chambers, Katie worked within the regulatory department at Kingsley Napley. She specialised in healthcare and educational regulatory matters.

Katie has completed the vulnerable witness training course through Lincoln’s Inn. She has experience of dealing with youth court matters – including sexual assault charges - involving both vulnerable witnesses and vulnerable defendants.

Katie has recently completed a six-month secondment at the CPS. She gained invaluable experience reviewing cases, making charging decisions and providing advice on the strength of the evidence. She was also required to provide instructions on acceptance of pleas and give instructions to the police.

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 BT

Katie represented a client at trial who was accused of possessing 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 knife was found in the boot of the clients car and his case was that he had never seen it previously. Katie’s speech to the jury focused on the ambiguity of the DNA evidence and forensics. The jury returned a unanimous not guilty verdict. Cambridge Crown Court.

Module Icon

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 2 prosecutor

Download Profile