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John Lester Email & Phone Number
Procurement Supplier Performance Manager and Market Category Specialist
at
Diageo
1 work email found
@diageo.com
2 phones found area 208 and 203
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Procurement Supplier Performance Manager and Market Category Specialist
Location
Belfast Metropolitan Area, United Kingdom, United Kingdom
Company size
Who is John Lester? Overview
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Quick answer
John Lester is listed as Procurement Supplier Performance Manager and Market Category Specialist at Diageo, a company with 32780 employees, based in Belfast Metropolitan Area, United Kingdom, United Kingdom. AeroLeads shows a work email signal at diageo.com, phone signal with area code 208, 203, and a matched LinkedIn profile for John Lester.
John Lester previously worked as Procurement Supplier Performance Manager/Market Category Specialist at Diageo and Supplier Performance Manager, Glass & Closures at Diageo. John Lester holds Bsc (Hons), Microbiology from University Of Aberdeen.
Company email context
Email format at Diageo
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{first}.{last}@diageo.com
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Profile bio
About John Lester
John Lester is a Procurement Supplier Performance Manager and Market Category Specialist at Diageo. He possess expertise in haccp, iso 9001 2000 lead auditor, flavouractive organoleptic trainer, procurement, supplier management and 37 more skills.
Listed skills include Haccp, Iso 9001 2000 Lead Auditor, Flavouractive Organoleptic Trainer, Procurement, and 38 others.
Current workplace
John Lester's current company
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Diageo
6 roles · 22 years
John Lester work experience
A career timeline built from the work history available for this profile.
Procurement Supplier Performance Manager/Market Category Specialist
CurrentManage suppliers and spend and local sourcing for a number of categories within DIAGEO's Global Brand Supply organisation across Scotland, Ireland/N.I., England and Italy including Corrugate, Multipacks/Cartons, Labels, Crowns, Decorative Seals&Charms, Sleeves and Closures.
Sep 2013 - Present
Supplier Performance Manager, Glass & Closures
Supplier Performance Manager for DIAGEO Spirits Supply (Ireland) covering Glass and Closures. Responsible for local sourcing and the key DIAGEO business relationship contact for suppliers. Manage supplier performance against key KPIs (principally quality, service and value).
Oct 2011 - Sep 2013
Supplier Performance Manager Ioi Paper Products
Supplier Performance Manager for DIAGEO IOI (Island of Ireland) covering Paper Products (cartons, labels) and Gifting. Responsible for local sourcing and the key DIAGEO business relationship contact for suppliers. Responsible for managing supplier performance against key KPIs (principally quality, service and value) Guinness Packaging (Runcorn, England and.
Oct 2009 - Oct 2011
Quality Assurance Manager
Quality Manager for Packaging facility in Belfast, N. Ireland.Production of Guinness, Harp, Smithwicks, Budweiser and Carlsberg as well as contract packaging of other brands.Responsibility for ensuring compliance to our ISO9001-2000 Quality Management System as well as Hygeine, HACCP, Pest Control and Quality Improvement programs.Direct line manager for a.
Jun 2006 - Oct 2009
Quality Analyst
Responsible for Microbiological and Chromatographic process analysis, the Guinness Organoleptic program at Irish Bonding in Belfast (ie. Beer Tasting) and project work.
2004 - 2006
~2 yrs
Team & coworkers
Colleagues at Diageo
Other employees you can reach at diageo.com. View company contacts for 32780 employees →
PS
Prerana Sitaraman (She/Her)
Colleague at Diageo
Amsterdam, North Holland, Netherlands, Netherlands
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AH
Ariane Helena De Jesus Santos
Colleague at Diageo
São Paulo, São Paulo, Brazil, Brazil
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GF
Guadalupe Fernandez Burgoa
Colleague at Diageo
Argentina, Argentina
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DT
Diageo Team
Colleague at Diageo
Argentina, Argentina
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AP
Alison Parker
Colleague at Diageo
Greater Toronto Area, Canada, Canada
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PB
Pria Basant-Balak
Colleague at Diageo
De Meern, Utrecht, Netherlands, Netherlands
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EB
Eva Budai
Colleague at Diageo
Budapest, Budapest, Hungary, Hungary
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AM
Ann Muoge
Colleague at Diageo
Kenya, Kenya
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AC
Amyleith Castillo
Colleague at Diageo
Panama, Panama
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GA
György Ahmann
Colleague at Diageo
Hungary, Hungary
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Prerana Sitaraman (She/Her)
Colleague at Diageo
Amsterdam, North Holland, Netherlands, Netherlands
View →
AH
Ariane Helena De Jesus Santos
Colleague at Diageo
São Paulo, São Paulo, Brazil, Brazil
View →
GF
Guadalupe Fernandez Burgoa
Colleague at Diageo
Argentina, Argentina
View →
DT
Diageo Team
Colleague at Diageo
Argentina, Argentina
View →
AP
Alison Parker
Colleague at Diageo
Greater Toronto Area, Canada, Canada
View →
PB
Pria Basant-Balak
Colleague at Diageo
De Meern, Utrecht, Netherlands, Netherlands
View →
EB
Eva Budai
Colleague at Diageo
Budapest, Budapest, Hungary, Hungary
View →
AM
Ann Muoge
Colleague at Diageo
Kenya, Kenya
View →
AC
Amyleith Castillo
Colleague at Diageo
Panama, Panama
View →
GA
György Ahmann
Colleague at Diageo
Hungary, Hungary
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1 education record
John Lester education
FAQ
Frequently asked questions about John Lester
Quick answers generated from the profile data available on this page.
What company does John Lester work for?
John Lester works for Diageo.
What is John Lester's role at Diageo?
John Lester is listed as Procurement Supplier Performance Manager and Market Category Specialist at Diageo.
What is John Lester's email address?
AeroLeads has found 1 work email signal at @diageo.com for John Lester at Diageo.
What is John Lester's phone number?
AeroLeads has found 2 phone signal(s) with area code 208, 203 for John Lester at Diageo.
Where is John Lester based?
John Lester is based in Belfast Metropolitan Area, United Kingdom, United Kingdom while working with Diageo.
What companies has John Lester worked for?
John Lester has worked for Diageo and Diageo - Global Procurement.
Who are John Lester's colleagues at Diageo?
John Lester's colleagues at Diageo include Prerana Sitaraman (She/Her), Ariane Helena De Jesus Santos, Guadalupe Fernandez Burgoa, Diageo Team, and Alison Parker.
How can I contact John Lester?
You can use AeroLeads to view verified contact signals for John Lester at Diageo, including work email, phone, and LinkedIn data when available.
What schools did John Lester attend?
John Lester holds Bsc (Hons), Microbiology from University Of Aberdeen.
What skills is John Lester known for?
John Lester is listed with skills including Haccp, Iso 9001 2000 Lead Auditor, Flavouractive Organoleptic Trainer, Procurement, Supplier Management, Quality Management, Taste, and Microbiology.
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