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

O’Neill & Brennan UK's NAICS code is 23 (Construction).

Insights

Growing footprint UK and Ireland expansion with a large client base in construction recruitment signals opportunity to cross-sell additional staffing services, temp-to-perm programs, and enhanced workforce solutions to new regional contractors.

Strong credibility Established brand since 1990 with industry accreditations and awards presents a compelling case for premium recruitment services, enabling upsell of higher-value staffing solutions and consulting on workforce efficiency.

Digital readiness Investments in state‑of‑the‑art systems and software, plus a tech stack including tracking and analytics tools, suggest opportunities to sell enhanced data insights, reporting dashboards, and talent analytics to optimize project staffing.

Public engagements Active participation in industry events such as Construction Jobs Expo and partnerships indicates potential for joint marketing, speaker engagements, and sponsored programs to generate qualified leads and expand contractor network.

Social value alignment Constructing Futures and charitable collaborations show a commitment to social value; this opens avenues to offer ESG-aligned recruitment programs, diverse workforce initiatives, and government or publicly funded project staffing opportunities.

Similar companies to O’Neill & Brennan UK

O’Neill & Brennan UK Tech Stack

O’Neill & Brennan UK uses 8 technology products and services including Facebook Pixel, Atlassian, Open Graph, and more. Explore O’Neill & Brennan UK's tech stack below.

Facebook Pixel
Analytics
Atlassian
Application Development & Management
Open Graph
Content Management System
Google Fonts API
Font Scripts
RxJS
Javascript Frameworks
Moment.js
Javascript Libraries
Google Tag Manager
Tag Management
Nginx
Web Servers

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 Formats	Example	Percentage
FLast@oneillandbrennan.com	JDoe@oneillandbrennan.com	63%
First.Last@oneillandbrennan.com	John.Doe@oneillandbrennan.com	24%
FirstLast@oneillandbrennan.com	JohnDoe@oneillandbrennan.com	10%
First@oneillandbrennan.com	John@oneillandbrennan.com	3%

Frequently Asked Questions

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

You can contact O’Neill & Brennan UK's main corporate office by phone at

+44-113-251-****

. 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?

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

How much revenue does O’Neill & Brennan UK generate?

As of July 2026, O’Neill & Brennan UK's annual revenue is estimated to be $10M - $25M.

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

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?

As of July 2026, O’Neill & Brennan UK has approximately 498 employees across 3 continents, including EuropeNorth AmericaAsia. Key team members include Head Of I.T Operations: A. A.Head Of Security: G. G.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?

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

What technology does O’Neill & Brennan UK use?

O’Neill & Brennan UK's tech stack includes Facebook PixelAtlassianOpen GraphGoogle Fonts APIRxJSMoment.jsGoogle Tag ManagerNginx.

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

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?

O’Neill & Brennan UK was founded in 1990.

O’Neill & Brennan UK

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

O’Neill & Brennan UK has approximately 498 employees.

Q: What technology does O’Neill & Brennan UK use?

O’Neill & Brennan UK's tech stack includes Flickity, html5media, Linkedin Insight Tag, HTTP/3, RxJS.

ConstructionEngland, United Kingdom201-500 Employees

O’Neill & Brennan is a recruitment firm focused on the construction sector. It provides staffing solutions to large construction contractors in the UK and Ireland, backed by more than 25 years of industry experience to support project staffing needs. Founded in 1990 and based in Potters Bar, England, the company has developed a long-standing brand and a broad client base across the region. The firm holds industry accreditations and certifications that reflect its quality standards and professional competency.

In the construction recruitment market, the company operates with a national footprint and ongoing expansion across the UK and Ireland. A notable development in recent years is the launch of Constructing Futures in 2022, a social value initiative the firm began delivering.