Doug Cooper

Year of Call: 2004, Inner Temple

Doug cooper
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Doug joined Deans Court Chambers in September 2014.

Prior to being called to the Bar in 2004, he worked for many years in the insurance industry, for Royal Insurance (now RSA), for NEM/AGF (now Allianz) and for the Iron Trades (now Chester Street Insurance Holdings and QBE) where he became the Regional Claims Manager. Most of this time was spent dealing with Employers’ and Public Liability cases, in latter years predominantly disease claims. This has remained the case whilst at the Bar.

His work is exclusively for Defendants, insurers, large corporate clients, public authorities or funds. 

The vast majority of his work concerns occupational disease claims, predominantly in respect of medical causation. The vast majority of his work is multi track work given the complexity of the issues, often involving in-depth knowledge of medical research and epidemiology underpinning such issues.

For the last few years, issues regarding de minimis in disease and fundamental dishonesty have been a large part of Doug’s practice. Limitation remains a significant issue in addition.

A significant part of Doug’s practice also involves issues of misconduct on the part of Claimant’s solicitors.

Clinical Negligence is a growing area of Doug’s practice. Doug also handles Product Liability claims and is regularly instructed by manufacturers of allegedly defective products.


He is very knowledgeable.

Chambers & Partners, 2023

Notable Cases

  • Holloway -v- Tyne Thames Technology Limited (2015)

    Industrial Disease - Deafness Claim

    The only issue before the court was whether the Claimant’s noise induced hearing loss was sufficient to sound in damages. Exposure, that such exposure was in breach of duty, limitation and causation were not in issue.

    The court was asked to decide if a hearing loss of between 0.8dB and 1.3dB (measured at the conventional speech frequencies of 1, 2 and 3kHz) or the diminution of the Claimant’s ability to hear sounds at 4kHz by about 10-15dB, was sufficient to sound in damages.

    His Honour Judge Freedman heard evidence from Professor Homer for the Claimant and Professor Lutman for the Defendant and made the following findings:

    1. A hearing loss at the conventional speech frequencies of 1, 2 and 3kHz of 3dB or less would not cause sufficient disability for the same to sound in damages.

    2. The /f/, /th/ and /t/ sounds were heard over a range of frequencies and therefore a hearing loss of 10-15dB at 4kHz was insufficient to cause disability, given they would be perceived at other unaffected frequencies.

    3. Although the sound /s/ may be frequency specific to 4kHz when made by some people, the Claimant’s hearing loss of 10-15dB at 4kHz would only cause her perception of such sounds to be diminished between about 40 and 55dB (she would have had similar disability as a consequence of age anyway between 30 and 45dB) but would have been unchanged at the level at which quiet conversational speech was perceived. Such a narrow ‘window of opportunity’ within which any theoretical disability may be manifest was insufficient to give rise to a claim for damages: de minimis non curat lex.

  • Cran -v- Perkins Engines Limited (January 2013)

    Personal Injury - Disease

    This was the first trial in which asymmetric hearing loss was alleged to be due to symmetric noise exposure. A copy of the judgment can be provided on request.

  • Hughes -v- Rhondda Cynon Taf County Borough Council (3rd August 2012, Cardiff CC)

    Personal Injury - Disease

    This was the first deafness case in which the principle of de minimis non curt lex was applied to noise damage. The Defendant successfully argued that the Claimant’s hearing loss at 4kHz (which was due to noise) did not cause him to be ‘appreciably worse off’ as his hearing at the speech frequencies of 1, 2 and 3kHz was well preserved.

  • Owens v Gwent CC

    Personal Injury - Hand Arm Vibration

    Case regarding the date of knowledge of local authorities regarding the use of gardening equipment (strimmers etc).


  • Lancaster Royal Grammar School
  • Manchester Metropolitan University

Articles by Doug