David has also worked closely with forensic scientists, pathologists, Senior Treasury Counsel at the Central Criminal Court, senior prosecuting and defence barristers, veteran junior counsel, Queens Counsel in Employment cases, senior and special case work Crown Prosecutors at the Crown Prosecution Service, defence and prosecution solicitors and a number of cause lawyers.

He has a wealth of experience of attending and giving evidence at Youth Courts, Magistrates Courts, Crown Courts including The Central Criminal Court (Old Bailey), Coroners Courts, County Courts, Employment Tribunals, Employment Appeals Tribunals and the Royal Courts of Justice.

David has been entrusted to work on some very sensitive cases and in some very sensitive
environments where, trust, confidence and reliability are essential qualities.

David built up an expertise in advocacy and support during many years as a senior investigator, middle manager and senior manager in the Metropolitan Police. His roles as a Police Federation Representative for Detective Chief Inspectors and Detective Inspectors, Police Federation Friend for all ranks and grades, Chairman and Support Worker for the Black Police Association also augmented his skills and expertise. His clients included the relatives, families and victims on murder, rape, child abuse and other major investigations. Chaperones trained in Sexual Offences Investigation Techniques, police officers and civilian staff alleging racial discrimination, sexual harassment, homophobia, bullying and other detriments in the work place also numbered among those he supported.

David also supported police officers and civilian staff about whom such allegations were made. In addition he also gave consultancy advice and assistance to managers dealing with and seeking to resolve the issues. He was called as an expert witness by the Commission for Racial Equality.

His final project as a police officer, was as a key contributor to review, revise and rewrite the Internal Fair Practice, Policy and Procedures for Metropolitan Police Service and to provide a robust support structure for all those who would manage and be involved in the procedures.