What departments does John Guest have?

John Guest has employees across 13 departments including Finance, Business Development, Quality Assurance, Information Technology, Marketing.

What is the largest department at John Guest?

The largest department at John Guest is Sales with 6 employees.

Where are John Guest employees located globally?

John Guest has employees across 4 continents and 9 countries including India, China, United Kingdom Of Great Britain And Northern Ireland, Italy, Germany.

How has John Guest's team size changed over time?

John Guest's team has grown from approximately 46 to 63 employees based on available data.

John Guest Employee Directory

Industrial Machinery ManufacturingEngland, United Kingdom51-200 Employees

John Guest is a manufacturer of plastic push-fit fittings, valves, pipes and tubing, and it sits within the Reliance Worldwide Corporation family. Its products are used across sectors including drinks dispense, plumbing and heating, compressed and pneumatic systems, water filtration, telecoms, automotive, and various OEM applications. The company supports durable performance through a development process that emphasizes research and development, product testing, and quality control, complemented by design and technical services for customers.

Based in London, England, the company operates in the industrial machinery manufacturing sector and serves a global market with products in use worldwide. It joined the Reliance Worldwide Corporation family through an acquisition completed in 2018, and has since expanded its offerings with product launches such as Reliance Valves with JG Speedfit connections and SharkBite Air push-fit fittings.

John Guest Global Highlights

Europe
166

United Kingdom Of Great Britain And Northern Ireland
153
Italy
5
France
5
Germany
2
Ireland
1

North America
7

United States Of America
7

Asia
2

India
1
China
1

South America
1

Colombia
1

John Guest's Leadership

A. J.
Chief Financial Officer
Mobile Phone
Email
T. S.
Director Of Business Development
Mobile Phone
Email
T. F.
Director Of Quality
Mobile Phone
Email
B. G.
Director
Mobile Phone
Email
H. S.
Director
Mobile Phone
Email
H. W.
It Director
Mobile Phone
Email
J. G.
Director
Mobile Phone
Email
J. M.
Director
Mobile Phone
Email

John Guest Employee Metrics

100%

50%

0%

2026

2025

Manufacturing
Administrative
Supply Chain
Accounting
Arts & Design
Other
Business
Business Development

Contact profiles from John Guest

Name

Title

Contact

Location

Last Update

R. B.
Director
Mobile Phone
Email
UNITED KINGDOM, MIDDLESEX
Oct 31, 2022
S. B.
Director
Mobile Phone
Email
UNITED KINGDOM, Middlesex
Oct 31, 2023
S. C.
Director
Mobile Phone
Email
UNITED KINGDOM, Middlesex
Oct 31, 2023
T. V. D. W.
Director
Mobile Phone
Email
UNITED KINGDOM, MIDDLESEX
Oct 31, 2022
T. G.
Director
Mobile Phone
Email
UNITED KINGDOM, MIDDLESEX
Oct 31, 2022
B. G.
Director
Mobile Phone
Email
United Kingdom, England
Jul 31, 2026
G. A.
Director Of Engineering Design
Mobile Phone
Email
United Kingdom, England
Sep 01, 2026
R. G.
Director
Mobile Phone
Email
United Kingdom, England
Aug 22, 2026
N. S.
Technical Manager
Mobile Phone
Email
United Kingdom, England
Aug 31, 2026
C. P.
Area Sales Manager
Mobile Phone
Email
United Kingdom, England
Jul 07, 2026

Frequently Asked Questions

What is John Guest known for?

John Guest was founded in 1961 and operates in the Industrial Machinery Manufacturing industry. Explore John Guest's company overview page for more information.

What is John Guest's most common email format?

John Guest employees' email format typically follows the pattern of First.Last@johnguest.com. Trying to find reliable and up-to-date employee contact data? Find more John Guest email formats with LeadIQ.

How many employees does John Guest have currently?

John Guest has approximately 154 employees as of August 2026. These team members are located across 4 continents, including Europe, North America and Asia.

Who are John Guest's key employees and leadership?

As of August 2026, John Guest's key employees include:

Chief Financial Officer: A. J.
Director Of Business Development: T. S.
Director Of Quality: T. F.
Director: B. G.
Director: H. S.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Everything for prospecting,
in one platform.

What you can expect from LeadIQ:

B2B data verified in real-time
Sync data to your CRM, & add it to an outreach sequence in one click
Integrations with your tech stack for optimal efficiency
A patented AI cold email generator
Account & contact-level job change tracking

John Guest Employee Directory

Find John Guest employees' phone numbers or email addresses

Name search is limited — try advanced search instead