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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 July 2026
4 data sources
Profile completeness 100%
Current company
Role
Procurement Supplier Performance Manager and Market Category Specialist
Location
Belfast Metropolitan Area, 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 with 32780 employees, based in Belfast Metropolitan Area, 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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AeroLeads found 1 current-domain work email signal for John Lester. Compare company email patterns before reaching out.
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 · 23 years
John Lester work experience
A career timeline built from the work history available for this profile.
Procurement Supplier Performance Manager/Market Category Specialist
Manage 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.
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 Belfast, N. Ireland), Bushmills and Baileys Dublin and Baileys Mallusk.
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 team of 14
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 →
OL
Omolade Ladejobi
Colleague at DiageoNigeria
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HA
Heeyoung Ahn
Colleague at DiageoSeoul, South Korea, Korea, Republic Of
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EM
Emil Minasyan
Colleague at DiageoYerevan, Armenia
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SM
Sahana M Shetty
Colleague at DiageoKarnataka, India
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MN
Mauro Neso
Colleague at DiageoAlba, Piedmont, Italy
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MS
Martin Sloss Bsc Dip Ia Comptia A Net Mcp
Colleague at DiageoCrail, Scotland, United Kingdom
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GH
Geovanny Hernandez
Colleague at DiageoNew York City Metropolitan Area, United States
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SM
Stephanie Morrow
Colleague at DiageoNew York, United States
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SM
Sean M.
Colleague at DiageoLondon, England, United Kingdom
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NT
Natasha Tan
Colleague at DiageoKota Blitar, East Java, Indonesia
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Omolade Ladejobi
Colleague at DiageoNigeria
View →
HA
Heeyoung Ahn
Colleague at DiageoSeoul, South Korea, Korea, Republic Of
View →
EM
Emil Minasyan
Colleague at DiageoYerevan, Armenia
View →
SM
Sahana M Shetty
Colleague at DiageoKarnataka, India
View →
MN
Mauro Neso
Colleague at DiageoAlba, Piedmont, Italy
View →
MS
Martin Sloss Bsc Dip Ia Comptia A Net Mcp
Colleague at DiageoCrail, Scotland, United Kingdom
View →
GH
Geovanny Hernandez
Colleague at DiageoNew York City Metropolitan Area, United States
View →
SM
Stephanie Morrow
Colleague at DiageoNew York, United States
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SM
Sean M.
Colleague at DiageoLondon, England, United Kingdom
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NT
Natasha Tan
Colleague at DiageoKota Blitar, East Java, Indonesia
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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 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 Omolade Ladejobi, Heeyoung Ahn, Emil Minasyan, Sahana M Shetty, and Mauro Neso.
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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