About Us

We aim to be at the forefront of environmental consultancy firms, with a strong sense of commitment to our clients and their projects.

We are a medium-sized independent consultancy that is large enough to handle the most complex projects, yet small enough to respond flexibly to client needs and allows our clients the reassurance of knowing the consultants working on their projects.

We work in a wide variety of sectors but are primarily known for our work related to residential, commercial and entertainment industries. We work throughout the UK and occasionally further afield.

Our History

The seeds of the company were sown in 2000 when Patrick Allen moved on from his role as Head of Architectural Acoustics at a leading UK consultancy to set up Cass Allen.

Since then we have grown steadily to become one of the UK’s largest independent acoustics consultancies, constantly expanding into new areas of expertise. 2022 saw the start of our air quality division and our growth into a multidisciplinary environmental consultancy.

Our People

Our team combines technical knowledge with practical experience and a pragmatic outlook on solving your challenges.

All our consultants are qualified to first degree level or higher in industry-related subjects and are members of the relevant professional institutes for their specialist areas.

To find out more about our team please click here.


We believe we are the right team to ensure the success of your project and offer the following 6-point guarantee:


1. We will respond to you quickly

We understand that responsiveness is a key attribute of specialist consultants. We have processes in place to ensure all queries are answered promptly and helpfully.


2. Our advice will be clear and concise

We specifically seek out and employ approachable, proactive and friendly staff with excellent communication skills. We will communicate solutions and advice clearly and effectively with minimum jargon.


3. We will be pragmatic

We always adopt a pragmatic approach to any project and will provide advice in the best interest of our clients to provide the most cost-effective solutions.


4. We will be honest and true to our word

If we say we will achieve a deadline then we will. We will not over promise and will always deliver. We will help you confront problems upfront and work closely with you to find the solutions.


5. We will provide best value for money

Our internal systems and processes are geared around efficiency. Our experience allows us to proactively spot problems early to help you minimise delays and unforeseen costs. On previous projects we have saved our fees many times through value engineering.


6. You will be satisfied with our work

We ask all clients for feedback and to rate our service out of 5. Our current average Client rating is 4.85 out of 5.

Please visit testimonials to review detailed feedback we have received from our clients.

Cass Allen is a specialist Acoustics consultancy focused on the development, construction and environmental industries.

We have delivered over 3000 successful projects working alongside many of the UK’s leading developers, contractors and architects.

Contact Details
01234 834 862

Cass Allen Associates Ltd
Bedford i-lab
Priory Business Park
MK44 3RZ

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