Architectural & Environmental Acousticians

Noise & Vibration Engineers

  • Noise from Waste Transfer Station – London

    Noise from Waste Transfer Station – London

  • Large mixed-use scheme – One Tower Bridge

    Large mixed-use scheme – One Tower Bridge

  • New Hotel – Heathrow Airport

    New Hotel – Heathrow Airport

  • New residential village for Berkeley Homes

    New residential village for Berkeley Homes

  • New Container Distribution Hub – Felixstowe

    New Container Distribution Hub – Felixstowe

  • New Skills Academy – Bristol

    New Skills Academy – Bristol

  • New Chapel and Crematorium – Milton Keynes

    New Chapel and Crematorium – Milton Keynes

  • New Leisure Centre – Nottingham

    New Leisure Centre – Nottingham

  • New Office Block – London

    New Office Block – London

“Cass Allen are extremely proactive in their approach, always timely and provide their expertise in a very user-friendly manner. They are exceptionally cost aware and always endeavour to provide cost effective solutions. They are a pleasure to work with and an invaluable member of the design team.”

Luke Cronin, Technical Manager, Willmott Dixon

Cass Allen have worked on almost every Telford Homes scheme. The repeat business and continued relationship thrives on the service we receive, day in day out. They work very closely with us to provide a solution that works for us. They’re a proven asset to our business.

Daryl Diggons, Senior Technical Coordinator, Telford Homes plc

“Cass Allen has worked on a number of commissions for Taylor Wimpey. Commercially focused, Cass Allen consistently provides a professional and pro-active service which is very much aligned to finding and providing the right solution for the client.”

David Rowland, Technical Manager, Taylor Wimpey South Thames

“Cass Allen went above and beyond to help with the project, in particular proactively advising on the baseline noise S106 obligation and how to mitigate any risk to the client’s project needs and also the surrounding stakeholders.”

Liam McGuigan, Project Manager, Capita plc

“A thorough and efficient service, very easy to work with and crucially very proactive in finding solutions. The site was positioned over Network Rail & HS1 assets so was particularly sensitive from a noise and vibration perspective and Cass Allen’s work here has proved invaluable.”

RJ, Senior Technical Co-Ordinator, Telford Homes

“Good comprehensive reports and advice at all design stages. Very flexible and professional, provided attendance at acoustic cladding tests at short notice. Would use again.”

David Farrell, Senior Technical Manager, Berkeley Homes (South East London)

“I have dealt with 4-5 different members of Cass Allen. I find them all to be very helpful, proactive and very practical. I also found them very willing to engage with Planners to agree a more practical approach than had been agreed by a previous Acoustician working on our behalf.”

Ricky Allgood, Technical Manager, Berkeley Homes (South East London) Ltd

“Cass Allen was employed to give advice in a complaint which involved one of our purchasers and the local authority. I was very pleased with their technical knowledge and professional approach when dealing with a very awkward purchaser as well as the local authority.”

JH, Telford Homes

“Project undertaken and delivered to high standard. Will continue to use Cass Allen services in the future.”

Mario Cvetkovski, Survey Manager, Equate Design

“Cass Allen have assisted us on a number of our projects. I’ve been impressed with their thorough and professional approach.”

Michael Temple, Planning & Project Manager, Lark Energy

Contact Us

We are always happy to talk through projects without cost or obligation. You can be sure of a helpful and frank response from all of our staff. If we can help, we will – if we can’t, then we will say so and will do our best to point you in the right direction.


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

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Patrick Allen - Director /   Direct Dial: 01234 834859   / Email

Patrick is a Chartered Engineer (CEng) and Fellow of the Institute of Acoustics (FIOA) who graduated in 1986 in Electroacoustics from the University of Salford. He specialises in architectural acoustics, large-scale planning projects and expert testimony services and is a founding member of the Expert Witness Institute (MEWI).

Patrick holds post-graduate qualifications from the Chartered Institute of Marketing and Cranfield Business School and trained with BBC TV and Radio before joining the Salex Group of Noise Control Companies. He then spent 12 years at Spectrum Acoustics Consultants as Head of Architectural and Building Acoustics before forming Cass Allen in 2000.

Alongside acoustics, Patrick's main interest is music and he regularly works as a recording producer/engineer with broadcast organisations and record labels including BBC, Classic FM, Decca and Deutsche Grammophon. He formed Opera Omnia Productions in 1993 to allow him to develop these interests and the synergy between acoustic design and music recording has proved invaluable on many performing arts projects. Patrick is also a non-exec director of Hazard Chase Artist Management.

Patrick Allen

Chris McNeillie - Director /   Direct Dial: 01234 834872   / Email

Chris advises on a wide variety of projects and also manages many of the internal teams of acousticians that we bring together to handle large projects. He is a Chartered Engineer (CEng), holds an MSc in Environmental and Architectural Acoustics, and a Post-graduate Diploma in Acoustics and Noise Control from the UK Institute of Acoustics (IOA).

Chris's experience includes noise and vibration assessments for a range of residential, commercial, industrial and infrastructure developments on behalf of a wide range of public and private sector clients. Of particular interest is working with clients on large-scale industrial and infrastructure projects and he presented a paper at Acoustics 2012 in Hong Kong on large-scale industrial noise management. Chris spent a few years working in Australia on large industrial projects including road upgrades, mine and quarrying expansions, new ports and new industrial facilities.

Outside work, Chris is a keen cyclist and a terrible golfer.

Chris McNeillie

Sam Bryant - Associate Director /   Direct Dial: 01234 834846   / Email

Sam completed an MPhys at Cardiff University where he specialised in acoustics. After graduating he worked in underwater environmental acoustics on wildlife conservation projects.

Sam joined Cass Allen in 2013 as an Acoustics Consultant and was made an Associate Director in 2018. His experience includes noise and vibration assessments throughout the planning and design process for residential, educational and industrial projects. Sam is particularly interested in specialist room acoustics and reverberation design for performance and exhibition spaces.

In his spare time Sam is an enthusiastic but averagely skilled guitarist and regularly gigs with his band in and around Bedfordshire.

Sam Bryant

James Hart - Principal Consultant - Building Acoustics /   Direct Dial: 01234 834858   / Email

James specialises in building acoustics with particular expertise in structure-borne noise. He manages the pre-completion testing division of the firm and is a examiner for the ANC (Association of Noise Consultants). He graduated with a BSc in Audio Technology (1st Class) and also holds a post-graduate Diploma in Acoustics and Noise Control from the UK Institute of Acoustics (IOA).

James joined Cass Allen in 2007 and is the person to call for advice in architectural acoustics and building surveys for new-build or refurbished developments.

Outside of work James enjoys the rush of the racing circuit, traction kiting and other accident-prone activities.

Dr Tim Ives - Principal Consultant /   Direct Dial: 01234 834869   / Email

Tim read Electroacoustics at the University of Salford before studying for his PhD in Psychoacoustics at the University of Brighton. He is a Chartered Engineer (CEng), a Fellow of the Institute of Acoustics (FIOA), a recognized expert in auditory psychophysics and computational acoustic modelling and has published in many leading international journals. He has worked at industrial and research facilities in Holland, France the US and UK including seven years at the University of Cambridge. He has a particular interest in room/architectural acoustics and speech intelligibility in commercial environments.

Dr Tim Ives

Adam Bamford - Senior Acoustics Consultant /   Direct Dial: 01234 834773   / Email

Adam specialises in environmental acoustics and manages the firm's demolition and construction monitoring services (i.e. dust, noise and vibration and S61 Agreements). He joined Cass Allen as a consultant after 6 years experience with Peter Brett Associates, including handling the acoustics for large projects such as Thames Tideway Tunnel and was made Senior Consultant in 2015. He graduated with a BSc (Hons) in Natural Sciences (1st Class) from Lancaster University, holds a post-graduate Diploma in Acoustics and Noise Control and is a full member of the UK Institute of Acoustics (MIOA).

Adam’s previous experience includes environmental noise and vibration assessments and stakeholder engagement for residential, commercial and industrial developments for both public and private sector clients.

Outside of work Adam is a keen photographer, hiker and runner and enjoys travelling.

Alex Young - Senior Acoustics Consultant /   Direct Dial: 01234 834871   / Email

Alex is an Acoustics Consultant with Cass Allen who specialises in residential planning projects and building services acoustics. Alex holds a bachelor’s degree in Music Technology and an MSc in Applied Acoustics. He is a full Member of the Institute of Acoustics (MIOA) and an associate lecturer in Acoustics at Derby University. Outside of work he enjoys playing and writing music and has composed music for a number of feature films, including the imaginatively titled ‘Killer/Saurus’.

Alex Young

Fabio Lassandro - Senior Acoustics Consultant /   Direct Dial: 01234 834861   / Email

Fabio graduated in Aerospace Engineering from the University of Turin. He also holds an MSc in Applied Acoustics from the University of Derby and a postgraduate Diploma in Acoustics and Noise Control. Fabio came to the UK in 2013 to further his experience in acoustics, and joined Cass Allen in 2015. He is a full Member of the Institute of Acoustics (MIOA) and specialises in building acoustics throughout the planning, design, construction and testing phases. He is also now involved in a number of environmental projects. Outside work Fabio loves playing football, cooking and spending time with friends.

Fabio Lassandro

Neil Morgan - Senior Acoustics Consultant /   Direct Dial: 01234 834839   / Email

Neil Morgan graduated in Sound Engineering from Birmingham City University, where he continued to tutor in studio design. He spent many years working in education and as a freelance sound engineer before joining Cass Allen. At Cass Allen, Neil’s work includes large residential projects as well as a special interest in the acoustic design of new green energy facilities. Neil is a full Member of the Institute of Acoustics (MIOA). He still maintains a strong interest in audio, engaging in music as a guitarist and producer as well as building his own recording equipment.

Neil Morgan

Jonathan Kay - Senior Acoustics Consultant /   Direct Dial: 01234 834860   / Email

Jonathan joined Cass Allen as a consultant after 2 years’ experience in the acoustics department at Capita, where he was exposed to a wide variety of projects and large scale developments. He graduated with a BEng(Hons) in Audio Technology (1st Class) from the University of Salford, and is a full Member of the Institute of Acoustics (MIOA). Jonathan’s final year project was featured as a paper and poster session at the ‘Reproduced Sound 2013’ Institute of Acoustics conference, entitled ‘Awareness System for Headphone Users’. In his spare time he enjoys playing the guitar and occasionally dabbles in writing music.

Jonathan Kay

Alex Clark - Acoustics Consultant /   Direct Dial: 01234 834662   / Email

Alex graduated in Acoustical Engineering from the Institute of Sound and Vibration Research (ISVR) at the University of Southampton, and is an associate member of the Institute of Acoustics (AMIOA). His final year project investigated the use of ultrasonic acoustic emissions as an early method of detecting osteoarthritis in the knee. Outside of work Alex enjoys playing the drums and cooking.

Anthony Coraci - Acoustics Consultant /   Direct Dial: 01234 834826   / Email

Anthony is a Technician member of the IOA and is completing the postgraduate Diploma in Acoustics and Noise Control at the University of Derby. He holds a BSc in Music Technology (first class) where he specialised in musical & studio acoustics. His postgraduate dissertation project involves researching the effects of noise exposure whilst cycling. In his spare time, he enjoys fencing, cycling and learning Italian.

Sue Ambrose - Finance Manager /   Direct Dial: 01234 834863   / Email

Sue is CIMA qualified and has previously worked as a Finance Manager in both the construction and food manufacturing industries. Outside of work Sue enjoys cycling, swimming, baking cakes & crafting.

Fiona Allen - Client Services Director /   Direct Dial: 01234 834862   / Email

Fiona holds an MA in Modern Languages from Oxford University and post-graduate qualifications from Cambridge University. After her studies Fiona embarked on a long and successful career in Human Resources working exclusively for professional firms. She has been HR Director of several City Law firms, before moving out of London to become HR Director for a nationwide planning firm. At Cass Allen, Fiona looks after recruitment and staff, as well as handling some client matters that are not related to projects or finance. Her main interests outside work are the theatre, singing and Nordic walking.

Fiona Allen

Carrie Roberio - Office Manager /   Direct Dial: 01234 834862   / Email

Carrie has worked in an office environment for approx 19 years with the majority of her roles supporting and managing Directors/Executive Management in all types of sectors from Insurance to Aerospace Research & Development. Her skill set covers a wide variety of areas to include accounting, event management and graphics/marketing. Outside of work Carrie likes food, cooking and eating; is a fair weather golfer; and loves a pizza carpet picnic with a good movie.

Carrie Roberio

Contact Us

We hope you find the site interesting but we cannot hope that it will answer all queries, so please feel free to call us to talk through any acoustic issues you may be facing on your projects. The best person that can help with specific queries can be found here.