Insights

Growing Construction Focus O’Neill & Brennan has established itself as a leading staffing provider within the UK and Irish construction sectors, working with more clients than competitors in the space. This positions them as a strong partner for larger construction firms seeking reliable recruitment solutions.

Expanding Market Reach Recent growth and UK-wide expansion indicate increased market presence. There is a significant opportunity to offer customized recruitment and workforce solutions to new regional clients across the UK and Ireland.

Innovation and Technology Adoption Heavy investment in innovative, state-of-the-art recruitment systems demonstrates a commitment to efficiency and quality service, making them appealing for construction companies seeking modern staffing solutions aligned with digital trends.

Strategic Partnerships Collaborations with organizations like Wates and social initiatives such as Buses4homeless showcase a proactive approach to industry and community engagement, providing avenues to upsell CSR-aligned staffing and training services.

Construction Industry Trends With a revenue range of $10M to $25M and extensive experience, O’Neill & Brennan is well-positioned to capitalize on rising infrastructure projects and construction demand, especially as industry growth accelerates post-pandemic, offering opportunities for targeted recruitment and consultancy services.

O’Neill & Brennan UK Tech Stack

O’Neill & Brennan UK uses 8 technology products and services including Facebook Pixel, Google Hosted Libraries, Google Fonts API, and more. Explore O’Neill & Brennan UK's tech stack below.

  • Facebook Pixel
    Analytics
  • Google Hosted Libraries
    Content Delivery Network
  • Google Fonts API
    Font Scripts
  • Flickity
    Javascript Libraries
  • Modernizr
    Javascript Libraries
  • UPS
    Logistics
  • Google Tag Manager
    Tag Management
  • Backstretch
    Web Tools And Plugins

Media & News

O’Neill & Brennan UK's Email Address Formats

O’Neill & Brennan UK uses at least 1 format(s):
O’Neill & Brennan UK Email FormatsExamplePercentage
FLast@oneillandbrennan.comJDoe@oneillandbrennan.com
62%
First.Last@oneillandbrennan.comJohn.Doe@oneillandbrennan.com
25%
FirstLast@oneillandbrennan.comJohnDoe@oneillandbrennan.com
10%
First@oneillandbrennan.comJohn@oneillandbrennan.com
3%

Frequently Asked Questions

Where is O’Neill & Brennan UK's headquarters located?

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O’Neill & Brennan UK's main headquarters is located at 3 Darkes Lane Potters Bar, England en6 1ag United Kingdom. The company has employees across 4 continents, including EuropeNorth AmericaAsia.

What is O’Neill & Brennan UK's phone number?

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You can contact O’Neill & Brennan UK's main corporate office by phone at . 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 O’Neill & Brennan UK's official website and social media links?

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O’Neill & Brennan UK's official website is oneillandbrennan.com and has social profiles on LinkedIn.

What is O’Neill & Brennan UK's SIC code NAICS code?

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O’Neill & Brennan UK's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 23 - Construction.

How many employees does O’Neill & Brennan UK have currently?

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As of March 2026, O’Neill & Brennan UK has approximately 495 employees across 4 continents, including EuropeNorth AmericaAsia. Key team members include Head Of Commercial: M. M.Head Of I.T Operations: A. A.Head Of Information Technology: A. A.. Explore O’Neill & Brennan UK's employee directory with LeadIQ.

What industry does O’Neill & Brennan UK belong to?

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O’Neill & Brennan UK operates in the Construction industry.

What technology does O’Neill & Brennan UK use?

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O’Neill & Brennan UK's tech stack includes Facebook PixelGoogle Hosted LibrariesGoogle Fonts APIFlickityModernizrUPSGoogle Tag ManagerBackstretch.

What is O’Neill & Brennan UK's email format?

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O’Neill & Brennan UK's email format typically follows the pattern of FLast@oneillandbrennan.com. Find more O’Neill & Brennan UK email formats with LeadIQ.

When was O’Neill & Brennan UK founded?

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O’Neill & Brennan UK was founded in 1990.

O’Neill & Brennan UK

ConstructionEngland, United Kingdom201-500 Employees

Established in 1990, O’Neill & Brennan has firmly cemented its position as a preferred supplier of staff to many of the largest construction contractors in the UK and Ireland. This is because we offer a long standing and trusted brand, utilising over 25 years of industry experience to deliver first class recruitment solutions for our clients. 

Our industry  accreditations, awards and certifications, demonstrates the quality of our work, meaning we have not only the credibility and authority within the market place, but the integrity and competency with which we have been recognised, to deliver a full and comprehensive service to our customers.

We specialise in the construction space and currently work with more clients nationally than any other construction recruitment companies. With unprecedented growth, expansion across the UK and Ireland, and significant investment in new, innovative, state-of-the-art systems and software, our desire to be the preferred staffing solutions provider of choice, has never been greater.

Section iconCompany Overview

Headquarters
3 Darkes Lane Potters Bar, England en6 1ag United Kingdom
Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
23 - Construction
Founded
1990
Employees
201-500

Section iconFunding & Financials

  • $10M$25M

    O’Neill & Brennan UK's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    O’Neill & Brennan UK's revenue is estimated to be in the range of $10M$25M

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