Insights

Industry Reach HSL operates in public relations and marketing communications with established credentials in motor, finance and travel sectors, suggesting opportunities to upsell cross-sector PR programs and sector-specific thought leadership campaigns.

Scale & Stability With 501-1000 employees and a long track record of over 30 years plus high client retention, target opportunities likely include large, ongoing retainer engagements and expanded scopes for integrated communications.

Tech Enablement A diverse tech stack including AWS, Google Cloud, WordPress and CRM/workflow tools points to potential for digital marketing acceleration, martech integrations, and data-driven PR analytics services.

Revenue Signals Reported revenue in the multi‑billion range suggests capacity for sizable new business but also a need for scalable onboarding, refresh of dashboards, and value-based pricing proposals for enterprise clients.

Media & Thought Leadership Strong media relationships and emphasis on thought leadership indicate opportunities to offer premium content programs, awards strategy, and crisis-ready messaging for brand reputational programs.

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HSL Tech Stack

HSL uses 8 technology products and services including SOLIDWORKS, Amazon Web Services, WordPress, and more. Explore HSL's tech stack below.

SOLIDWORKS
Cad & Graphics
Amazon Web Services
Cloud Hosting
WordPress
Content Management System
Amazon Simple Email Service
Email
Microsoft 365
Email
Workday
Human Resource Management System
Google Cloud
Infrastructure As A Service
WP Engine
Platform As A Service

HSL's Email Address Formats

HSL uses at least 1 email format:

HSL Email Formats	Example	Percentage
First@harrisonsadler.com	John@harrisonsadler.com	100%

Frequently Asked Questions

What is HSL's stock symbol?

HSL is a publicly traded company; the company's stock symbol is HSL.L.

What is HSL's official website and social media links?

HSL's official website is harrisonsadler.com and has social profiles on LinkedIn.

How much revenue does HSL generate?

As of August 2026, HSL's annual revenue is estimated to be $1B - $10B.

What is HSL's NAICS code?

HSL's NAICS code is 54182 - Public Relations Agencies.

How many employees does HSL have currently?

As of August 2026, HSL has approximately 664 employees across 6 continents, including Asia, Europe and North America. Key team members include Chief Financial Officer, Co-Founder: J. W., Deputy Md: A. R. and Deputy Managing Director: J. H. Explore HSL's employee directory with LeadIQ.

What industry does HSL belong to?

HSL operates in the Public Relations and Communications Services industry.

What technology does HSL use?

HSL's tech stack includes SOLIDWORKS, Amazon Web Services, WordPress, Amazon Simple Email Service, Microsoft 365, Workday, Google Cloud and WP Engine.

What is HSL's email format?

HSL's email format typically follows the pattern of First@harrisonsadler.com. Find more HSL email formats with LeadIQ.

When was HSL founded?

HSL was founded in 1987.

HSL

Q: What is HSL's stock symbol?

HSL is a publicly traded company; the company's stock symbol is HSL.L.

Q: What is HSL's official website and social media links?

HSL's official website is harrisonsadler.com. HSL has social profiles on LinkedIn.

Q: How much revenue does HSL generate?

HSL's annual revenue is estimated to be $1B - $10B.

Q: How many employees does HSL have currently?

HSL has approximately 664 employees.

Q: What industry does HSL belong to?

HSL operates in the Public Relations and Communications Services industry.

Q: What technology does HSL use?

HSL's tech stack includes Twemoji, MySQL, jQuery Migrate, Workday, ISO.

Q: What is HSL's NAICS code?

HSL's NAICS code is 54182 (Public Relations Agencies).

Public Relations and Communications ServicesEngland, United Kingdom501-1000 Employees

HSL is a sizable public relations and marketing communications agency based in London, England. With more than 30 years in operation, it has developed credentials in the motor, finance, and travel sectors.

The firm develops ongoing marketing communications programmes as well as short-term projects for its clients. It emphasizes media relationships and thought-leadership positioning, and it produces copy for social media responses, news stories, and award entries.