Tessian headquarters details
- Street address
- 15 Worship Street 4th Floor
- City
- London
- State / region
- England
- ZIP / postal code
- EC2A 2DT
- Country
- United Kingdom
- Phone
- +44 20 8068 5223
- Founded
- 2013
- Website
- tessian.com
- linkedin.com/company/tessian
Location map
Open in Google MapsAll Tessian office locations
| City | State / region | Country | Type |
|---|---|---|---|
| London HQ | England | United Kingdom | Headquarters |
Showing the headquarters of 9 recorded locations. See every location in GraphIQ →
About Tessian
Tessian is headquartered in London, England, United Kingdom. Founded in 2013, the company has 9 recorded locations across 2+ countries and employs approximately 196 people worldwide.
Where is Tessian's main office?
Tessian's main headquarters office is located at 15 Worship Street 4th Floor, London, England EC2A 2DT, United Kingdom. This is the company's primary corporate address.
Tessian regional offices
Beyond its headquarters in London, Tessian has recorded locations in United Kingdom and United States.
Tessian contact information
The main switchboard for Tessian headquarters can be reached at +44 20 8068 5223. Official website: tessian.com.
What does Tessian do?
Tessian is building the world’s first Human Layer Security platform to automatically secure all human-digital interactions within the enterprise. Today, their products use stateful machine learning to protect people using email and to prevent threats like spear phishing, accidental data loss due to misdirected emails, data exfiltration and other non-compliant email activity.
Frequently asked questions
Where is Tessian headquarters?
Tessian's headquarters is located at 15 Worship Street 4th Floor, London, England EC2A 2DT, United Kingdom.
How many offices does Tessian have?
GraphIQ records 9 locations for Tessian across 2+ countries, as of October 2026.
What is Tessian's corporate address?
The corporate headquarters address is 15 Worship Street 4th Floor, London, England EC2A 2DT, United Kingdom.
When was Tessian founded?
Tessian was founded in 2013 and employs approximately 196 people.
What is Tessian's phone number?
The main phone number for Tessian headquarters is +44 20 8068 5223.
How many employees does Tessian have?
Tessian has approximately 196 employees (GraphIQ estimate, 2026).