Following a successful career in local government, Marcia trained as a solicitor with renowned civil liberties firm Birnberg Peirce rising to become director.
Marcia has and continues to represent families in challenging and high profile cases against the state. She acted for the family of Jean Charles de Menezes, shot dead by police in 2005 and represented the family in the 2011 police shooting of Mark Duggan. More recently Willis Stewart was the lead lawyer for the legal team acting on behalf of 77 of the 96 families at the Hillsborough Inquests, where it was ruled that the 96 were unlawfully killed.
A keen champion of diversity, she has created working environments to enable access for lawyers from marginalised communities, who are least likely to be afforded opportunities within the legal profession.
Willis Stewart has a long history of commitment to the voluntary sector and schools, contributing as an active trustee and governor.
Actions against the Police
Civil Liberties & Human Rights
Inquests & Inquiries
INQUEST Lawyers Group
Police Action Lawyers Group
Ranked Band 1 in Civil Liberties & Human Rights, and Police law in Chambers UK 2017
Public Law Solicitor of the Year, Legal Aid Practitioners’ Group 2015
Joint winner of the Rule of Law award, Halsbury Awards 2017
Commercial Award, Football Black List 2017
Listed in The Lawyer Hot 100 2017
Legal Personality of the Year, Solicitors Journal Awards 2017
Legacy Life Time Achievement Award for Inspiring Black People In Law 2017
Marcia is an accomplished and well respected practitioner, known for her legal acumen as well as her consummate diplomacy. Primarily a human rights lawyer, involved in numerous actions against the police and state, inquests, cases involving election fraud, and challenging the deportation and extradition of vulnerable children and adults.
Inquest into the death of Jean Charles de Menezes
Inquest into the death of Mark Duggan
Inquests into the deaths resulting from the Hillsborough Stadium Disaster
R (on the application of Prosser) v SSHD Department  EWHC 845 (Admin) ;  All ER (D) 125 (Apr)
The Ay family – R ( P & Q ) v SSHD ( 1st case)
Pamela Duggan v Commissioner of Police for the Metropolis
Inquest into the Lakanal House fire
R (Hallam) v. Secretary of State for Justice  EWCA CIV 355
The Camber Sands Inquests
It is still possible to lose a deceased loved one within the system simply because you do not fit the definition of ‘kin’ – Legal Action, April 2016
Peeling back the shadows – portraits from the Hillsborough Inquests, May 2016 with Sarah Booker
Justice delayed, but not denied – Law Society Gazette, May 2016
How the 96 were finally given justice – Legal Voice, September 2016 with Patrick Roche