Global Investigators & Security Consultants
0333 6000 300

Management Team


Roy Herridge

I am Roy Herridge QPM and I am the founder of Surelock. After 35 years in The Metropolitan Police Service I retired with the rank of Detective Superintendent, the most highly decorated officer at this time and have been awarded the Queens Police Medal for services to The Capital.

I have carried out investigations in a number of European countries and Asia since leaving the police service and working within our company Surelock. I am as keen now as I was within the police service and still carry out investigations of major crime.

In 1992 my autobiography “Believe No One” was published assisted by Brian Hilliard (then Editor of The Police Review).


Ron Harrison

Let me introduce myself I am Ron Harrison, the Operations Director of Surelock and responsible for the daily running of the company, identifying new clients and supervising a very dedicated team of experienced investigators and consultants nationwide.

A totally committed workaholic and true professional, 19 years in the private sector and 30 years’ experience as a dedicated Police Officer and Detective with Scotland Yard, working on many specialist squads both in UK and abroad. Since retiring from the Police I have continued with the same enthusiasm in the private sector and am now the Operations Director for Surelock, specialising in fraud, surveillance and under-cover operations. I am an expert in intellectual property right investigations and brand protection worldwide.

I am an active member of The Association of British Investigators and was voted onto the Governing Council of the ABI in May 2018, currently hold the position of Discipline Chairman. Also I am a member of The World Association of Detectives.


Carol Snowden

Hi I am Carol Snowden, Surelock’s Company Secretary. My background experience is mainly from the Metropolitan Police working in various reactive and proactive roles as a detective. I have a reputation as an experienced investigator with aptitude and attention to detail with a belief in fairness and sensitivity in dealing with others. I am responsible for the smooth running of our office, assisting our team of investigators and my aim is to provide our clients with the best service possible.

Our team of consultants are hand-picked to include first class highly experienced investigators who have a background investigating serious and complex crimes, security surveyors trained to a high level who can produce complex reports with graphics and also include extremely skilled surveillance operatives.We insist on working to strict guidelines within current law and as each person is an individual we can ensure the most suitable person is assigned for the specific needs of our clients.

Our approach is personal and effective, whatever the requirement there is a solution. Great team work is our company’s weapon – listening to our client’s needs and solving their problems is our goal.