Simon was with the Metropolitan Police Service (MPS) for 30 years, reaching the rank of Commander in 2003.

He has a background in specialist crime investigation (having led the teams in the MPS dealing with murder, rape and child abuse), and community policing (having been the Borough Commander in Lambeth). As a senior leader in the MPS he has been involved in a wide range of high risk operational activities, many of which have been in the national and international news. He was awarded the Queens Police Medal for distinguished service in the New Year’s Honours List in 2009.

As a member of the Association of Police Officers (ACPO) and as deputy chair of the ACPO Homicide Working Group he was the national lead for the role of Family Liaison Officers (FLO) as part of investigations. In this capacity he represented ACPO in the setting up of the first National Homicide Service and as such was responsible for integrating the police and wider investigative aspects of the delivery of this service. He also supported the Ministry of Justice (MoJ) is its process to decide which third sector organisations were suitable for funding to provide support to families of victims of homicide.

Since his retirement from the service in 2012, he has been engaged in a wide range of portfolio activities in both the public and private sector as a limited company – Selltow Consultancy Limited.

He has participated in discussions and advised those who have taken steps to set up Supporting Justice CIC as a means of providing proper support for victims and witnesses (Witness Service).