Learn more about the structure and duties of Thames Valley Police’s Local Police Area Commanders (LPAs).

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Supt Mike Loebenberg

Superintendent Michael Loebenberg

LPA Commander – Aylesbury Vale

Supt Loebenberg initially joined the Metropolitan Police Service as a Police Constable in 2006. Over his career he has served in each rank, in roles including response and neighbourhood policing, crime investigation and custody services. He has worked across numerous policy and strategy areas, and holds a Bachelor of Science degree from UCL, as well as a Master’s degree in Police Leadership and Management from Warwick. He has worked on many large scale football, protest and ceremonial events as an accredited public order commander.

Supt Loebenberg joined Thames Valley Police as a Superintendent in 2017 and spent two years leading the NPCC Digital Public Contact Programme, forging a nationwide collaboration which is transforming the online services offered for contact between the public and the police by forces across England and Wales. He recently received an NPCC Chair’s Commendation for his work on the programme and continues his work in this area as a Board Member. He has commanded Aylesbury Vale since 2019, leading the police partnership for the establishment of Buckinghamshire Council, and is proud of the area’s achievements in protecting the community and bringing offenders to justice.

Supt Felicity Parker

Superintendent Felicity Parker

LPA Commander – Bracknell and Wokingham

Superintendent Felicity Parker took over as LPA Commander for Bracknell and Wokingham in April 2019.

Felicity transferred from the Protecting Vulnerable People’s department and brings a wealth of experience including multiagency safeguarding, risk management for victims of domestic abuse and investigating serious crimes. She also led the Thames Valley Police response to modern slavery between 2017 and 2019.

With a master’s degree in Police Management and Leadership from Warwick Business School, she is committed to supporting the teams she leads to deliver a robust public service to protect local communities.

Supt Emma Garside

Superintendent Emma Garside

LPA Commander – Cherwell and West Oxfordshire

Superintendent Emma Garside joined Thames Valley Police in 1996 and has worked in a range of roles across response, neighbourhood and investigations functions.

As a Sergeant, she led on innovative work to create Thames Valley Police’s first multi-agency offender management team and as a Neighbourhood Inspector was commended for the work she led on police engagement with rural communities.  

More recently, she was the Deputy Head of the force’s Criminal Justice Department, Deputy Commander at Cherwell & West Oxfordshire and also led on a strategic business change project with Surrey and Sussex.

Supt Amy Clements

Superintendent Amy Clements

LPA Commander – Chiltern and South Buckinghamshire

Superintendent Amy Clements joined Thames Valley Police in 2017 as part of the Direct Entry programme and has worked as a police officer in stations across Buckinghamshire.

Supt Clements previously worked as a senior lawyer in the Government Legal Service, where she specialised in Public Law litigation and criminal prosecutions. This included a fraud prosecution in 2012 which led to fishing companies in Spain and the UK being fined £1.6m.

She has also worked with the Legal Services Commission developing policy and strategy for civil legal aid.

Supt Marc Tarbit

Superintendent Marc Tarbit

LPA Commander – Milton Keynes

Superintendent Marc Tarbit joined Thames Valley Police in 1998. Marc has performed both uniform and detective roles in Oxford, where he most recently worked as the Deputy LPA Commander for the past three years. He also spent a number of years working in Force Intelligence, leading on improving the police response to tackling organised crime and the collaboration between TVP and the South East Regional Organised Crime Unit.

During his career, Marc gained a Masters Degree from Cambridge University in Criminology and Police Leadership, strengthening his interest in evidence-based policing. He brought a wealth of experience in leadership, neighbourhood policing and tackling organised crime with him to Milton Keynes on his appointment as LPA Commander in December 2019.

Supt Bruce Riddell

Superintendent Bruce Riddell

LPA Commander – Oxford

Superintendent Bruce Riddell joined Thames Valley Police at Banbury police station in 1996 and since then has worked in a range of roles including as a Neighbourhood Sergeant, a Detective Inspector on the Serious and Organised Crime Unit, a secondment to the National Crime Agency (NCA) and most recently as the Silver Commander on the force response to the COVID pandemic.

Superintendent Riddell is also the lead for the Force Hostage and Crises Negotiators.

Supt Nick John

Superintendent Nick John

LPA Commander – Reading

Superintendent Nicholas John has been appointed as the new Commander for the Reading Local Policing Area (LPA).

Supt John initially joined the Metropolitan Police Service as a Police Constable in 1998. During his time in the Met he served as a constable and sergeant in a range of roles from response, neighbourhood policing, custody services and CID, including reactive and proactive posts.

In 2006, Supt John moved to Wiltshire Constabulary, where he served in a number of operational and detective roles in each rank up to and including the rank of Superintendent in December 2012. As a Superintendent, he held the role of Head of Force CID and Local Policing Commander for Wiltshire.
In 2015, Supt John moved to Thames Valley, where he was appointed Head of Serious and Organised Crime, before moving to be the Head of Protecting Vulnerable People.

Most recently, Supt John has been the Local Policing Commander for West Berkshire, a challenging but very enjoyable role, leading the policing response across a significant area.

Supt Gavin Wong

Superintendent Gavin Wong

LPA Commander – Slough

Superintendent Gavin Wong is returning as the new LPA Commander for the Slough Local Policing Area (LPA), having completed a two-year secondment as Head of Local Policing and Resilience for Thames Valley Police.

Superintendent Gavin Wong started his policing career at Slough in 1994, and having spent over half of his service in the area, is very much looking forward to his return. While on secondment, he was also responsible for the tactical policing response during the Royal Ascot Week, which reflects his operational background.

Supt Lis Knight

Superintendent Lis Knight

LPA Commander – South Oxfordshire and the Vale of White Horse

Superintendent Lis Knight joined Thames Valley Police in 2003, after starting her career as a police officer in the West Midlands.

Having worked within the fields of Domestic Abuse, Intelligence, and Neighbourhood policing, Supt Knight then became a Detective Chief Inspector for the force’s Criminal Investigation Department within Oxfordshire.

Most recently, Supt Knight was the Business lead for a force wide project, which has seen the delivery of localised investigation teams in each LPA.

Having undertaken a Master’s degree in Police Management and Leadership, Supt Knight is a firm believer in Evidence Based Practice, combining academic rigour and analysis with the experience and practicalities of policing.

Supt Knight is also the Chair of the Thames Valley Women’s Network, and is passionate about supporting and helping women develop throughout their careers.


Superintendent Zahid Aziz

LPA Commander – West Berkshire

Superintendent Zahid Aziz has a policing career spanning more than 27 years. He joined Strathclyde Police in 1994 before transferring to Thames Valley Police as a sergeant in 2007, based initially in Reading. Supt Aziz has held a number of roles including as acting inspector in West Berkshire in 2010, inspector from 2013, force training manager in Sulhamstead from 2015 and as Slough LPA’s Deputy Commander. Before taking up the post of LPA Commander for West Berkshire in January 2021, he was Detective Chief Inspector in the Professional Standards Department.

Supt Aziz is passionate about ensuring victims remain at the centre of cases and working with our partners to keep our communities safe.

Supt Michael Greenwood

Superintendent Michael Greenwood

LPA Commander – Windsor and Maidenhead

Superintendent Michael Greenwood was appointed as Local Policing Area Commander for Windsor and Maidenhead in August 2020, having been Deputy LPA Commander for the previous two years.

Supt Greenwood joined Thames Valley Police in May 1993 and has held a number of operational and local policing roles including as a firearms commander, authorised firearms officer, explosive search dog handler, police search advisor and neighbourhood inspector.

He has worked on many large scale events in the Windsor area including state visits, Her Majesty the Queen Mother’s funeral and the 2012 Olympics, where he led the counter terrorism search operation at the rowing event at Eton Dorney Lake.

Supt Emma Burroughs

Superintendent Emma Burroughs

LPA Commander – Wycombe

Superintendent Burroughs joined Thames Valley Police in 1996, starting out as a PC in High Wycombe and was then promoted to Sergeant in the area.

Since then, she worked her way through the ranks in a range of roles across response, neighbourhood and investigation teams. In 2016 she became the Deputy LPA Commander for Reading and following that, spent 18 months within the Force Intelligence and Specialist Operations team. She then returned to Wycombe as the LPA Commander in 2020.