Graham Mainstone
CTO at BT | Greater Guildford Area, United Kingdom
Engage
candidates 10x faster
Enjoy unlimited access and discover candidates outside of LinkedIn
Trusted by 1.4M users from 76% of Fortune 500 companies
The most accurate data ever
CCPA Compliant
GDPR Compliant
150M
Personal Emails
200M
Work Emails
100M
Direct Dials
250M
Professional Profiles
40M
Company Profiles
Find anyone, anywhere
with ContactOut
today
Making remote or global hires?
Connecting
with key decision-makers? We can help.
- 40 emails / month
- 3 phone numbers / month
- Works on standard LinkedIn only
-
Work emails, personal emails,
mobile numbers
No credit card required
CTO at BT in January 2012 to Present
Architecture and Strategy at BT in May 2009 to May 2012
Global Network Operations Manager at ACS in September 2005 to April 2009
Senior Network and Security Consultant at Pipex in August 2000 to September 2005
Network and Security Implementation Consultant at Fullduplex in December 1996 to August 2000
See more
See less
Cloud Computing
Service Delivery
WAN
Telecommunications
Cisco Technologies
Firewalls
Virtualization
IP
Switches
VPN
Information Security Management
Information Security
VoIP
Business Continuity
IT Service Management
Checkpoint
IT Strategy
Integration
MPLS
Network Security
Networking
Professional Services
Multiprotocol Label Switching (MPLS)
Virtual Private Network (VPN)
Voice over IP (VoIP)
Wide Area Network (WAN)
Artificial Intelligence (AI)
AI Literacy
See more
See less
Discover more about BTWhat is Graham Mainstone email address?
Email Graham Mainstone at [email protected] and [email protected]. This email is the most updated Graham Mainstone's email found in 2026.
What is Graham Mainstone phone number?
Graham Mainstone phone number is +447918742128.
How to contact Graham Mainstone?
To contact Graham Mainstone send an email to [email protected] or [email protected]. If you want to call Graham Mainstone try calling on +447918742128. (updated on March 26, 2026)
What company does Graham Mainstone work for?
Graham Mainstone works for BT
What is Graham Mainstone's role at BT?
Graham Mainstone is CTO
What industry does Graham Mainstone work in?
Graham Mainstone works in the Computer & Network Security industry.
Graham Mainstone Email Addresses
Graham Mainstone Phone Numbers
looking for?
Find personal and work emails for over 250M professionals.
People like Graham Mainstone
CTO at FundApps
CTO at ODL Securities
Fractional CTO and CIO at Freeman Clarke
Founder/CTO at MindsI Analytics Limited
CEO at Clinical Software Solutions Ltd
Senior Talent Acquisition (CyberSécurité & IT) at DATAPROTECT
Author | Researcher | CTF player at Hacking Articles
Business Development Director at Commvault
Technical Account Manager, Member (Customer) Success at Center for Internet Security
CEO EMEA & LATAM at Palo Alto Networks
Sales And Marketing Specialist at Cnc Makina Market
Head of Reward and Performance EMEA at Ricoh Europe
Show more
Show less