Describing Matrix as “very hot on human rights issues” within private claims against the police, the Chambers & Partners Guide to the Legal Profession 2006 – 7 recommends Matrix as a leading set in Police Law writing that:

Tim Owen QC [top ranked] is well recognised as a “polished all-rounder” boasting extensive experience in prison, police, public and inquest law. …He is rated as a “leading light” and is seen as a “first choice in any major police action or inquest.” Fellow silk Hugh Tomlinson QC [ranked second] also has a wide-reaching practice that encompasses both public and private law. His “encyclopaedic knowledge” is employed to good effect in civil jury trials and his contribution to the area is immortalised by his joint authorship of the leading practitioner text on the law of human rights and civil actions against the police. James Laddie's [top ranked] stellar employment practice feeds well into a police law workload that has a distinct emphasis on discrimination. …Instructing solicitors see him as “the complete barrister - meticulous in his preparation, pinpoint in his judgement, great at grasping the issues and an excellent advocate.” Gifted with a “breathtaking and extensive knowledge of police law and procedure,” leading junior Matthew Ryder  [top ranked] is the expert of choice on offences under the Terrorism Act 2000, having appeared in many notable trials in this sphere. He also focuses on the interplay between civil and criminal law and has appeared in some highly publicised claims such as that brought by the parents of Stephen Lawrence. Interviewees praised his “sharp intellect, good gut feeling and breadth and depth of knowledge.”

In the Chambers & Partners 2005-6 Matrix was ranked joint 2nd Leading Set in Police Law:Mainly Claimant:

'"Among the elite who really specialise in this work" and doing it to an "exemplary standard," Matrix not only came in for praise for its police work but also for its flourishing human rights and civil liberties caseload. Described as "very calm, very measured and very effective," Tim Owen QC was hailed as "an extremely knowledgeable big hitter who is one of the first choices on meaty cases." "A good cross-examiner always up with the law," he has acted on behalf of bereaved families in many inquests into deaths in custody. Hugh Tomlinson QC is co-author, with Richard Clayton, of 'Civil Actions Against the Police' and "certainly knows all the angles to this sort of work." Tomlinson does high-level advisory and trial work and is noted, in particular, for his involvement in cases alleging misfeasance and false imprisonment. "Never one to miss a trick," Matthew Ryder was described as "an exemplary junior" with "an impressive depth of knowledge on all aspects of police law." "An excellent advocate who works hard and has the tenacity to pull out results," he was universally commended. Commentators also praised James Laddie for being "meticulously prepared, succinct and realistic." He "gets to the key issues quickly and fights his client's case to the hilt."' (Chambers & Partners - 2005-6)

In the Chambers & Partners 2004-5 Matrix was ranked joint 2nd Leading Set in Police Law:Mainly Claimant:

'The set doesn't pretend to have the volume in police work, but appears regularly on top-flight human rights and civil liberties issues. "Bright, clear-thinking and persuasive" Tim Owen QC flies the flag for police claims in the higher courts. Solicitors value his ability to "master the brief incredibly well, really focus and impress juries." He has been visible in O'Brien v Chief Constable of South Wales Police, concerning a wrongful murder conviction. He also acted for the family of Harry Stanley, who was shot dead by policemen whilst carrying a piece of wood. Hugh Tomlinson QC is knowledgeable and influential in this field. His co-authorship with Richard Clayton of 'Civil Actions Against the Police' is a universally recognised achievement. The most widely praised junior at Matrix is Matthew Ryder. A "real star," he is "combative, competent and charming." Solicitors value him as "good on his feet, with an encyclopaedic knowledge." He combines civil and criminal work and has assisted in the submissions for important cases such as Marper. James Laddie joins the tables this year. Impressed solicitors consider his preparation "second to none."' (Chambers & Partners - 2004-5)

'Dynamic junior Danny Friedman is experienced in police cases' (Legal 500 - 2004)