Executive Chairman
Current
Sep 2020 - Present
AeroLeads people directory · profile
David Harris Email & Phone Number
Chairman / Investor/ NED / Mentor
at
One Big Circle Ltd
1 work email found
@onebigcircle.co.uk
LinkedIn matched
✓ Verified July 2026
4 data sources
Profile completeness 100%
Current company
Role
Chairman / Investor/ NED / Mentor
Location
Bristol, England, United Kingdom
Company size
Who is David Harris? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
David Harris is listed as Chairman / Investor/ NED / Mentor at One Big Circle Ltd, a with 8 employees, based in Bristol, England, United Kingdom. AeroLeads shows a work email signal at onebigcircle.co.uk and a matched LinkedIn profile for David Harris.
David Harris previously worked as Executive Chairman at One Big Circle Ltd and Chairman at Popcomms. David Harris studied at University Of Plymouth.
Company email context
Email format at One Big Circle Ltd
This section adds company-level context without repeating David Harris's masked contact details.
{first}@onebigcircle.co.uk
89% confidence
AeroLeads found 1 current-domain work email signal for David Harris. Compare company email patterns before reaching out.
Profile bio
About David Harris
I was the co-founder and CEO of Purple Secure Systems which was established in 2006. The business grew successfully and was sold in 2016 to CACI UK and I left at the end of 2017. I am now the Executive Chairman at One Big Circle in Bristol and I also Chair Popcomms. I mentor and invest in other small businesses in the South-West, mostly through Bristol Private Equity Club (BPEC). I have a passion for supporting anyone entrepreneurial and helping founders grow their start-ups or scale-ups.
Listed skills include Defence, Software Engineering, Requirements Management, Program Management, and 33 others.
Current workplace
David Harris's current company
Company context helps verify the profile and gives searchers a useful next step.
One Big Circle Ltd
8 roles
David Harris work experience
A career timeline built from the work history available for this profile.
Chairman
Current
Jan 2023 - Present
Non Executive Director
Dec 2019 - Feb 2024
Non Executive Director
Jan 2019 - Jun 2020
Director
Mar 2016 - Nov 2017
Co-Founder And Ceo
Purple Secure Systems
May 2006 - Mar 2016
Business Development Consultant
Nov 2002 - Apr 2006
Business Development Consultant
Mastek Uk Ltd
Apr 1999 - Nov 2002
Team & coworkers
Colleagues at One Big Circle Ltd
Other employees you can reach at onebigcircle.co.uk. View company contacts for 8 employees →
CD
Cameron Dudd
Colleague at One Big Circle LtdBristol, England, United Kingdom
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AG
Alfie Graham
Colleague at One Big Circle LtdBristol, England, United Kingdom
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JB
Jake Bird
Colleague at One Big Circle LtdBath, England, United Kingdom
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AL
Andy Lyford
Colleague at One Big Circle LtdBristol, England, United Kingdom
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SW
Szymon Waliczek
Colleague at One Big Circle LtdBradley Stoke, England, United Kingdom
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EW
Euan Williams
Colleague at One Big Circle LtdBristol, England, United Kingdom
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PS
Paige Stinchcombe
Colleague at One Big Circle LtdBristol, England, United Kingdom
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KB
Kelsey Baker
Colleague at One Big Circle LtdBristol, England, United Kingdom
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JB
Josh Ball
Colleague at One Big Circle LtdUnited Kingdom
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DD
Dexter Davies
Colleague at One Big Circle LtdBristol, England, United Kingdom
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Cameron Dudd
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
AG
Alfie Graham
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
JB
Jake Bird
Colleague at One Big Circle LtdBath, England, United Kingdom
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AL
Andy Lyford
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
SW
Szymon Waliczek
Colleague at One Big Circle LtdBradley Stoke, England, United Kingdom
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EW
Euan Williams
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
PS
Paige Stinchcombe
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
KB
Kelsey Baker
Colleague at One Big Circle LtdBristol, England, United Kingdom
View →
JB
Josh Ball
Colleague at One Big Circle LtdUnited Kingdom
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DD
Dexter Davies
Colleague at One Big Circle LtdBristol, England, United Kingdom
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1 education record
David Harris education
FAQ
Frequently asked questions about David Harris
Quick answers generated from the profile data available on this page.
What company does David Harris work for?
David Harris works for One Big Circle Ltd.
What is David Harris's role at One Big Circle Ltd?
David Harris is listed as Chairman / Investor/ NED / Mentor at One Big Circle Ltd.
What is David Harris's email address?
AeroLeads has found 1 work email signal at @onebigcircle.co.uk for David Harris at One Big Circle Ltd.
Where is David Harris based?
David Harris is based in Bristol, England, United Kingdom while working with One Big Circle Ltd.
What companies has David Harris worked for?
David Harris has worked for One Big Circle Ltd, Popcomms, Okko Health, The Fsc Group, and Caci Ltd.
Who are David Harris's colleagues at One Big Circle Ltd?
David Harris's colleagues at One Big Circle Ltd include Cameron Dudd, Alfie Graham, Jake Bird, Andy Lyford, and Szymon Waliczek.
How can I contact David Harris?
You can use AeroLeads to view verified contact signals for David Harris at One Big Circle Ltd, including work email, phone, and LinkedIn data when available.
What schools did David Harris attend?
David Harris studied at University Of Plymouth.
What skills is David Harris known for?
David Harris is listed with skills including Defence, Software Engineering, Requirements Management, Program Management, Integration, System Architecture, Requirements Analysis, and Software Development.
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