About Us

What we do

Walnut provide a range of acoustical consultancy services from noise surveys and acoustic designs for commercial and residential developments, through to environmental and industrial noise impact assessments and noise at work reports.

We are a small but highly focused group of consultants who can be engaged individually or as a team depending on the size and nature of the project involved. We cover all the major British Standards on noise and acoustics including BS8233, BS4142, BS5228 and BB93 and provide detailed reports for a wide range of industrial, commercial and property developments.

Our consultants are

Tim Sherlock-Brown

(M.I.O.A. MSc)

Tim has been working in sound engineering and acoustics for 20 years and has gained a lot of experience in electro-acoustics and acoustic design during that time. He moved full time into acoustics and noise consultancy in the last 5 years and also has found the time to get an impressive masters degree in Applied Acoustics.

Tim has wide experience in noise assessment projects including assessing distribution centres, city office developments, waste management sites and bus stations. Tim consistently provides clients with excellent reports and advice on noise regulations and how to achieve or exceed these standards in construction. He has advised a number of high profile clients on noise and acoustics for their projects including Nestlé and the Met Office.

Darren Ryder

(M.I.O.A. MSc, MIET)

Darren Ryder has worked as an acoustical consultant since 2007 and is a full member of the Institute of Acoustics. He originally completed the I.O.A. post graduate Diploma in Acoustics and Noise Control and has since been awarded an MSc in Applied Acoustics from Derby University.

Darren specialises in undertaking noise surveys and assessments, assisting in the design of dwellings, pubs and clubs, hospitals, auditoria, recording studios, schools and factories. He offers a wide range of knowledge and expertise in the field of acoustics and noise control to a varied client base.

Nick Myerscough


Nick has been involved in the audio-visual installation and live events production industry for nearly 20 years and has designed prestigious permanent audio-visual systems for educational and corporate clients. He also runs a successful production company designing and installing technical event solutions for a range of clients including IChemE and National Grid.

More recently he studied under the I.O.A. becoming an associate member and then joined Walnut Acoustics to strengthen their consultancy in the field of Architectural and Buildings Acoustics. Nick brings with him some very useful expertise in the design and installation of electro-acoustic and audio-visual solutions for public and performance spaces.


Our consultants are all proud to be associates and members of the Institute of Acoustics.