Incident
Killed in an accidental collision with a lorry while on motorcycle patrol.
In Our Keeping
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- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Police Constable Sumner served with the Thames Valley Police.
Thank you for your service. Gone but never to be forgotten.
Rest easy, Police Constable Sumner.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Accident
Thames Valley Police has lost 22 officers; 17 of them lost to accidents.
David is one of 1,335 officers lost to accidents in ENG, 47.9% of the 2,786 remembered there.
David is one of 1,673 officers lost to accidents in United Kingdom, 44.1% of the 3,791 remembered there.
David is one of 10,096 officers lost to accidents worldwide, 29.6% of the 34,103 remembered here.
34,103 officers are remembered on this memorial. Each number below is one of them.
Time
In 1981, 1 officer at Thames Valley Police was lost to accidents, the 2nd heaviest of 16 years on record. The heaviest was 1984, with 2.
In 1981, 14 officers in ENG were lost to accidents, the 13th heaviest of 193 years on record. The heaviest was 1940, with 35.
In 1981, 18 officers in United Kingdom were lost to accidents, the 11th heaviest of 194 years on record. The heaviest was 1940, with 40.
In 1981, 81 officers worldwide were lost to accidents, the 54th heaviest of 200 years on record. The heaviest was 1930, with 131.
Who
David was 38. Of the 17 lost to accidents at Thames Valley Police whose age is recorded, half were between 28 and 41; the middle age was 36.
David was 38. Of the 1,310 lost to accidents in ENG whose age is recorded, half were between 28 and 43; the middle age was 35.
David was 38. Of the 1,612 lost to accidents in United Kingdom whose age is recorded, half were between 27 and 43; the middle age was 35.
David was 38. Of the 9,452 lost to accidents worldwide whose age is recorded, half were between 29 and 45; the middle age was 36.
When
September holds 5.9% of these deaths at Thames Valley Police; December holds the most, 17.6%. Thursdays: 17.6%.
September holds 8.3% of these deaths in ENG; January holds the most, 10.7%. Thursdays: 14.2%.
September holds 8.5% of these deaths in United Kingdom; November holds the most, 9.9%. Thursdays: 15.3%.
September holds 9.1% of these deaths worldwide; August holds the most, 9.3%. Thursdays: 14.2%.
How
Accident deaths account for 77.3% of all 22 deaths at Thames Valley Police, the most common cause.
Accident deaths account for 47.9% of all 2,786 deaths in ENG, the most common cause.
Accident deaths account for 44.1% of all 3,791 deaths in United Kingdom, the most common cause.
Accident deaths account for 29.6% of all 34,103 deaths worldwide, the 2nd most common cause.
His people
Thames Valley Police has 22 officers remembered here, David among them.
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Ian Coward Jul 23, 1971
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William Byron Oct 14, 1977
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David John Sumner Sep 3, 1981
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Derek Anthony Duncan Oct 19, 1983
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Joanne Mary Cochran
Mar 29, 1984
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Laurence Michael Richardson Jun 19, 1984
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John Bispham Jan 9, 1987
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Roger Brereton
Aug 19, 1987
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Stephen Dixon Nov 11, 1988
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Peter William Bryan Betts Jul 15, 1993
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Martyn Francis Gerrard May 24, 1995
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Adrian Mark Baker
Apr 10, 2000
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David Robert de Burgh-Thomas
Jul 17, 2001
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Robert Charles Keylock
Nov 19, 2003
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Anthony Martin Jinks Mar 14, 2005
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Dee Marie Weatherley
Dec 13, 2008
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Joe Mabuto
Sep 27, 2016
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Gareth Browning
Apr 1, 2017
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James Dixon
Dec 5, 2017
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Daniel Clayton-Drabble
Dec 26, 2018
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Kevin Flint
Jan 15, 2019
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Andrew James Harper
Aug 15, 2019
Where the Name Is Cut
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