What is Holler's NAICS code?

Holler's NAICS code is 541613 (Marketing Consulting Services).

Insights

Growth geography Holler, a digital agency within the Leo Burnett Group with London operations and planned expansion to Chicago and Silicon Valley, presents expansion and cross-market partnership opportunities for large brands seeking a transatlantic digital entertainment strategy.

Digital entertainment Specializing in digital entertainment strategy to make brands famous and foster followings, Holler can upsell multimarket content campaigns, influencer-led activations, and scalable digital experiences for global advertisers.

Tech enablement Current tech stack includes web-centric tools (jQuery, Modernizr, Hammer.js, yepnope.js) and Google Analytics, suggesting opportunities for enhanced analytics, experimentation, and performance marketing services to optimize campaigns.

Financial scale With revenue in the multi‑tens of millions and a boutique team size, Holler is positioned for mid‑market to lower‑mid enterprise engagements, offering a platform for integrated marketing services and additional revenue lines.

Brand network As part of the Leo Burnett Group, Holler presents a channel for cross‑agency collaboration, access to a broader brand roster, and potential partnerships for end‑to‑end creative, media, and experience work.

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Holler Tech Stack

Holler uses 5 technology products and services including yepnope.js, Hammer.js, jQuery, and more. Explore Holler's tech stack below.

yepnope.js
Javascript Frameworks
Hammer.js
Javascript Libraries
jQuery
Javascript Libraries
Modernizr
Javascript Libraries
Google Analytics
Web Analytics

Holler's Email Address Formats

Holler uses at least 4 email formats:

Holler Email Formats	Example	Percentage
FirstLast@holler.co.uk	JohnDoe@holler.co.uk	58%
First@holler.co.uk	John@holler.co.uk	23%
Last@holler.co.uk	Doe@holler.co.uk	11%
FirLast@holler.co.uk	JohDoe@holler.co.uk	8%

Frequently Asked Questions

What is Holler's phone number?

You can contact Holler's main corporate office by phone at

+44-20-7209-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

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

Holler's official website is holler.co.uk and has social profiles on LinkedIn.

How much revenue does Holler generate?

As of October 2026, Holler's annual revenue is estimated to be $25M - $50M.

What is Holler's SIC code and NAICS code?

Holler's SIC code is 8742 - Management Consulting Services and NAICS code is 541613 - Marketing Consulting Services.

How many employees does Holler have currently?

As of October 2026, Holler has approximately 40 employees across 5 continents, including Europe, North America and Asia. Key team members include Head Of Music: B. L., Owner: S. H. and Strategy Director: B. M. Explore Holler's employee directory with LeadIQ.

What industry does Holler belong to?

Holler operates in the Advertising Services industry.

What technology does Holler use?

Holler's tech stack includes yepnope.js, Hammer.js, jQuery, Modernizr and Google Analytics.

What is Holler's email format?

Holler's email format typically follows the pattern of FirstLast@holler.co.uk. Find more Holler email formats with LeadIQ.

When was Holler founded?

Holler was founded in 2001.

Holler

Q: What is Holler's phone number?

You can contact Holler's main corporate office by phone at +44-20-7209-****.

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

Holler's official website is holler.co.uk. Holler has social profiles on LinkedIn.

Q: How much revenue does Holler generate?

Holler's annual revenue is estimated to be $25M - $50M.

Q: How many employees does Holler have currently?

Holler has approximately 40 employees.

Q: What industry does Holler belong to?

Holler operates in the Advertising Services industry.

Q: What technology does Holler use?

Holler's tech stack includes jQuery, Modernizr, yepnope.js, Google Analytics, Hammer.js.

Advertising ServicesEngland, United Kingdom11-50 Employees

Holler is a digital advertising agency based in London, England, and is part of the Leo Burnett Group. It focuses on digital entertainment strategies to help brands realise their ambitions, producing engaging content and cultivating a following to raise brand visibility. The approach blends content creation with advertising, aiming to make brands more recognizable through audience engagement.

The firm serves brands looking to leverage digital entertainment to extend reach and impact. It operates from London and plans to establish offices in Chicago and Silicon Valley, signaling growth beyond its current presence. The team is described as small to mid-sized.