Andy McKenzie is a director and principal consultant and manages the Salisbury office. He graduated in 1981 with an honours degree in Engineering Acoustics and Vibration from the Institute of Sound and Vibration Research at the University of Southampton where he subsequently obtained his PhD, awarded in 1988 for work on hearing aid design for use in noisy environments. He has worked in the field of acoustical engineering since graduation, firstly with Wilkinson-Murray Consulting in Sydney, Australia, then as a research assistant and research fellow at the Institute of Sound and Vibration Research and as a freelance consultant, before forming Hayes McKenzie with Malcolm Hayes in May 1991. He is a fellow of the Institute of Acoustics (IoA), a member of the Joint Institute of Acoustics / Institute of Environmental Assessment Noise Impact Assessment Working party and is one of two Institute of Acoustics representatives on the Microgeneration Certification Scheme Working Group 3 - Small and Micro Wind Turbines. He has organised and chaired two of the annual IoA one day conferences on wind turbine noise, given many conference presentations on the subject, and is on the editorial board of the EAA Journal ‘Acoustics in Practice’.

Rob Shepherd is a senior consultant and deputy manager of the Salisbury office. He graduated from the Institute of Sound and Vibration Research at the University of Southampton in 2005 with a Master of Engineering degree in Acoustical Engineering. While at university he worked part-time at a number of acoustic consultancies, including Hayes McKenzie, and joined full-time following graduation. At Hayes McKenzie he is responsible for the preparation of Environmental Impact Assessments for wind farm developments; other noise assessment work for planning purposes; planning condition compliance tests and source noise measurements. He is a member of the Institute of Acoustics and an associate member of the Institute of Mechanical Engineers.

Sylvia Broneske is a senior consultant at the Salisbury office with responsibility for liaison with manufacturers on source sound power level data. She graduated from the University of Applied Sciences, Hamburg, Germany with a degree in Environmental Engineering, during which time she worked part-time at Windtest Kaiser-Wilhelm-Koog GmbH (now GL Garrad Hassan Deutschland GmbH) with the acoustic measurement team. After graduation, she worked as an engineer and consultant in the Site Assessment Department of the wind turbine manufacturer Enercon GmbH in Germany. Her scope of duties included all aspects of wind turbine noise related issues and shadow impact assessment for wind farm developments, including programming the ENERCON shadow shutdown system to prevent shadow flicker at surrounding properties. In 2007 she joined Hayes McKenzie in Salisbury and is now a senior acoustic consultant, responsible for the preparation of Environmental Impact Assessments for wind farm developments; other noise assessment work for planning purposes; planning condition compliance tests, supporting the principal consultants at Public Inquiries and source noise measurements of wind turbines. She has given lectures on noise from wind turbines on several occasions at national and international meetings in the UK, Denmark and Germany. She is currently undertaking an MSc course in Sound and Vibration at the Institute of Sound and Vibration Research (ISVR) at the University of Southampton, whilst continuing to work at Hayes McKenzie. She is a member of the Institute of Acoustics and of the Verein Deutscher Ingenieure, the German equivalent of the Institute of Mechanical Engineers.

Seth Roberts is a consultant at the Salisbury office with responsibility for measurement equipment and other instrumentation. He has a BEng (Hons) degree in Acoustical Engineering from the Institute of Sound and Vibration Research at the University of Southampton and is also an associate member of the Institute of Acoustics. He joined Hayes McKenzie in 2009, having previously worked for The English Cogger Partnership in Winchester where he gained experience in environmental noise assessment for the support of planning applications; pre-completion testing and design-stage building acoustics based projects. Seth also worked at BAE underwater systems on the Talisman unmanned underwater vehicle project. The work consisted of a supervised, underwater acoustics research project that contributed directly to the design of the vehicle. Seth's research project in the final year of his degree used a pioneering technique for measuring the acoustic intensity of an ultrasonic transducer (underwater) that had not been used in any previous studies. Seth is registered with the Association of Noise Consultants for sound insulation testing under the requirements of the Building Regulations and is responsible for preparation of Environmental Impact Assessments for wind farm developments and other noise assessment work for planning purposes, including PPG24 and BS4142 noise assessments. Seth is also responsible for undertaking pre-completion sound insulation tests and preparing reports for remedial or design-stage building acoustics projects.

Mike Craven is a consultant at the Salisbury office with responsibility for undertaking Environmental Impact Assessments, investigating complaints and undertaking compliance measurements. He originally joined Hayes McKenzie in 2004, after completing a degree in Audio Technology at Salford University, where he worked in the Machynlleth office for three years, gaining experience in all aspects of wind turbine noise, including measurement, assessment and preparation of evidence for wind farm projects within the U.K and internationally. In 2008 he joined URS, based in Wimbledon, where he provided support to the Environmental Impact Assessment team on noise and vibration issues for a diverse range of projects, including large residential, commercial and industrial developments, oil and gas infrastructure and construction. The role also included advancing the company objective of expanding EIA related services both in the UK and internationally, in particular for wind farm developments, and providing advice on wind turbine noise as part of the trial Renewable Energy and Planning Expert Support Network (as invited by the Centre for Sustainable Energy). He re-joined Hayes McKenzie in October 2011.

Robin Woodward is a junior consultant at the Salisbury office. He joined the company in 2010 after graduating from the Institute of Sound and Vibration Research at the University of Southampton, with a BSc Hons in Acoustical Engineering and Music. At Hayes McKenzie he is responsible for the preparation of Environmental Impact Assessments for wind farm developments; other noise assessment work for planning purposes and planning condition compliance tests. He is an associate member of the Institute of Acoustics.

Malcolm Hayes is a director and principal consultant and manages the Machynlleth office. He graduated in 1982 with a degree in Electronic & Communication Engineering from the Polytechnic of North London. He has worked in the field of acoustical engineering since graduation rising through Hann Tucker Associates, becoming an Associate in 1990, before forming Hayes McKenzie in May 1991. He is a member of the Institute of Acoustics (IoA) and has also been a member of the DTI Working Group on Noise from Wind Turbines, a member of the Eskdalemuir Seismic Array Working Group and a member of the organising committee for international conferences on wind turbine noise in Berlin (2005), Lyon (2007), Aalborg (2009) and Rome (2011).

Paul Jindu is a consultant at the Machynlleth office. He graduated from Buckinghamshire Chilterns University College in 2001 after being awarded the degree of Bachelor of Engineering in Mechanical Engineering Design and subsequently obtained an MSc from Cranfield University in 2005 in Design of Rotating Machines. Paul previously worked at Acoustic Design Consultants, High Wycombe; AECOM; SLR Consulting and Bickerdike Allen and has over six years' experience in building acoustics and environmental noise and vibration. At Hayes McKenzie he is responsible for the preparation of Environmental Impact Assessments for wind farm developments, planning condition compliance tests and design advice for building acoustics and sound insulation testing. He is a member of the Institute of Acoustics and an accredited sound insulation tester with the Association of Noise Consultants.

Tom Levet is a consultant at the Machynlleth office. He graduated from the University of Salford in 2005 with a BSc in Audio Technology. This was followed by an MSc by Research degree, also from Salford, awarded in 2009. The MSc degree was undertaken in conjunction with wind turbine manufacturer GE Wind Energy and involved research and measurement campaigns related to the sound power level measurements of wind turbines. He joined Hayes McKenzie in 2007 and is responsible for the preparation of Environmental Impact Assessments for wind farm developments, planning condition compliance tests, and source noise measurements of wind turbines.

Tom Sedgman is a consultant at the Machynlleth office. He graduated from the Technology Innovation Centre at Birmingham City University in 2008 with a B.Sc. (Hons) in Sound Engineering and Production. Upon graduation he undertook work experience at the Building Design Partnership in London, joining Hayes McKenzie at the end of the year. At Hayes McKenzie he is responsible for the preparation of Environmental Impact Assessments for wind farm developments; other noise assessment work for planning purposes; planning condition compliance tests and source noise measurements. He is an associate member of the Institute of Acoustics and an associate of the Acoustical Society of America.