Joint Office Staff


The Joint Office currently has nine staff members, all of whom are seconded by the Gas Transporters. They have extensive experience of the governance processes surrounding development of the commercial arrangements which underpin the gas industry in GB.  Brief details of each staff member are provided below.

All can be contacted via or 0121 288 2107.


Penny Garner

Chief Executive

Penny was appointed to the role of CEO of the Joint Office in September 2017. She has come from National Grid/Cadent Gas where she has worked for nearly 20 years building up a wealth of experience in audit, compliance, ethics and regulation. 

Bob Fletcher

Workgroup Chair

Bob has over 40 years' experience in the gas industry, originally joining West Midlands Gas, Distribution. In recent years he has been involved in the development of Siteworks agreements, metering separation and separation of National Grid and sold Networks systems.  He is Chair of the Distribution Workgroup (DWG),  the Offtake Arrangements Workgroup (OAW) and Offtake Committee, the Energy Balancing Credit Committee (EBCC) and is also Secretary to the UNC Modification Panel and the UNC Committee (UNCC).

Rebecca Hailes

Workgroup Chair

Rebecca has over 20 years’ experience working with energy technologies, both in the UK and overseas. Prior to joining the Joint Office, Rebecca worked with Synnogy Ltd and E4tech, focusing on new energy strategy, development opportunities, future planning and horizon scanning for blue chips and large public bodies such as E.On, GE, Uniper, Balfour Beatty and HSL. A key focus was fuel cells and hydrogen, in all applications. She previously worked in product development with Nuvera Fuel Cells in the US and at Kodak. She holds degrees in Environmental Technology, Manufacturing Engineering and German from Brunel University and Imperial College and is a Chartered Engineer. Rebecca is Chair of the Transmission Workgroup and the NTS Charging Methodology Forum (NTSCMF) and manages some of the staff at the Joint Office. For more information please see: 


Helen Bennett

Workgroup Coordinator

Helen has over 30 years’ experience in the Gas Industry, originally joining British Gas on a 6 month Youth Opportunities Scheme and then working in various departments from Customer Services to Performance Reporting. She then enjoyed some time at Npower and Xoserve before moving to National Grid and the Gas Incentive Team managing the Capacity Auction process. Helen joined the Joint Office in February 2017.

Helen Cuin

Workgroup Coordinator

Helen has over 29 years' experience in the gas industry, originally joining British Gas as a Commercial Trainee. Helen joined the Joint Office in 2005.  She Chairs a number of Committees including the Demand Estimation Sub-committee (DESC), the DESC Technical Workgroup, and the Shrinkage Forum, she is also the Secretary to various Workgroups and Committees, as required.

Karen Visgarda

Workgroup Coordinator

Karen joined the Joint Office in March 2015 and although new to the gas industry, she brings a wealth of experience regarding customer account management, communications, stakeholder engagement, product implementation and project management from both the Automotive and Retail logistics industries. She is Secretary to the Transmission Workgroup, and other Workgroups and Committees, as required.

Mike Berrisford

Workgroup Coordinator

Mike has over 40 years' experience in the gas industry, originally joining British Gas as an Apprentice Gas Fitter.  He is the Secretary to the Distribution Workgroup (DWG) and the Distribution Networks Charging Methodology Forum (DNCMF).

Kully Jones

Workgroup Coordinator

Kully joined the Joint Office as a Workgroup Co-ordinator in September 2017. She has over 23 years experience as a civil servant in the education sector developing, managing and evaluating polices for young people and adults. She brings a wealth of experience in stakeholder management and governance having worked with senior colleagues, commercial businesses, state-funded providers and Ofqual.