Hayes McKenzie Partnership Ltd is a consultancy practice covering all aspects of acoustics, noise and vibration. The original partnership was established in 1991 by Andy McKenzie and Malcolm Hayes and became a limited company in 2004.

The practice company currently has 10 full-time consultants and works out of two offices; one near Salisbury in the south-west of England and one near Machynlleth in mid-Wales. All consulting staff are associate or corporate members of the UK Institute of Acoustics and the company is a member of the UK Association of Noise Consultants.

Projects range from multi-million-pound power-generation projects, to small housing developments; from prediction of noise from large airport developments, to planning applications for small industrial units.

The company has particular expertise in noise from wind turbines and wind farm sites, having worked on over 700 projects across the UK, the Irish Republic, mainland Europe, Australia, New Zealand, Asia and the USA and are recognised industry leaders in this field.