ThirtyThree

What ThirtyThree does

ThirtyThree (legal name Conexia Limited) is a London-headquartered, full-service employer branding agency founded in 1998, employing 136 people with additional presence in Bristol. The firm serves large enterprises and blue-chip organizations across every sector, including financial services (Deutsche Bank), retail and fast food (McDonald's, KFC, ASOS, M&S, B&Q), professional services (Accenture), legal services (A&O Shearman), logistics (Royal Mail), and government (Essex County Council, The Army). Its core offerings span Employee Value Proposition (EVP) development, employer brand strategy, early careers programs, DE&I consulting, campaign management, social media management, film and animation production, careers website development, employee advocacy, and audience activation strategy.

The company's technology foundation centers on 33Mercury®, a registered trademark and proprietary careers site platform that integrates multiple Applicant Tracking Systems (ATS) onto a single searchable platform with dynamic job descriptions and personalized candidate journeys. A second proprietary offering, DE&I Unlocked, codifies an inclusive communications audit framework across 35+ inclusion and accessibility metrics, delivered as Silver and Gold tiered packages. The agency has documented quantified outcomes across its client base, including 18.21% conversion rates for McDonald's, a 987% page view increase for ASOS, 300% YOY application growth for Royal Mail, and 84% YOY impression growth for A&O Shearman.

ThirtyThree operates a project-based professional services model with multi-year contracts, supplemented by recurring platform revenue from 33Mercury® and DE&I Unlocked. Pricing is quote-based and not publicly disclosed for core employer branding services. The go-to-market is consultative enterprise field sales, with client acquisition through the website contact form, referrals, LinkedIn, events, and direct outreach. The firm is privately held, with no parent company, no external funding rounds, and no public listing. Office locations are London (headquarters at Golden Cross House and an Old Street office) and Bristol.

Name

ThirtyThree

Legal name

Conexia Limited

Website

https://thirtythreeglobal.com

Company type

Private

Operating status

Operating

Headcount range

101–250 employees

Short description

ThirtyThree (Conexia Limited) is a London-based full-service employer branding agency founded in 1998, serving large enterprises and government clients across multiple sectors with EVP development, careers websites, campaign management, DE&I, and the proprietary 33Mercury® platform.

Ownership category

akta.pro rank

Product category

Employer Branding Services

NAICS

Advertising Agencies (541810), Media Representatives (541840), Employment Placement Agencies (561311)

SIC

Services-Advertising Agencies (7311), Services-Employment Agencies (7361)

akta.pro primary industry

Employer Brand & Recruitment Marketing Creative Agencies (MPAAAAAM)

akta.pro secondary industries

Employer Brand Strategy & Talent Branding (BPAFAEAH), Talent Acquisition (Recruiting) & Applicant Tracking (ATS) (BPACAPAD)

Keywords

• Employer branding services
• Talent attraction strategy
• EVP development
• Careers website platform
• DE&I communications

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Employer Branding Consulting and Creative Services: Project-based professional services engagements for employer branding, EVP development, employer brand campaigns, careers website development, social media management, film and animation production, and employee advocacy programmes.
2. DE&I Audit Services: Silver and Gold tiered audit packages for inclusive communications assessment of careers websites and social channels, with follow-up consultation and workshops.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

ThirtyThree is a full-service employer branding agency that helps organisations attract, develop, and retain talent through strategy, data analytics, and creative production. Its offering spans EVP development, employer brand campaigns, early careers programs, DE&I communications, careers website development (powered by the proprietary 33Mercury® platform), social media management, film and animation, employee advocacy, audience activation, and employee engagement. The agency serves large enterprise and blue-chip clients across financial services, retail, technology, legal, government, and professional services sectors.

Product overview

ThirtyThree is a full-service employer branding agency offering a portfolio of strategic, creative, and digital services. The core offerings include Employee Value Proposition (EVP) development, Employer Branding, Early Careers programs, Diversity, Equity & Inclusion (DE&I) consulting, Campaign Management, Social Media Management, Film & Animation production, Careers Websites, Employee Advocacy programs, Audience Activation Strategy, and Employee Engagement services. The agency operates a proprietary platform called 33Mercury® for building bespoke careers websites with integrated job search and ATS connectivity. The DE&I Unlocked service provides an inclusive communications audit using a framework of 35+ metrics. The portfolio spans strategy, research, creative production, digital platforms, and ongoing campaign management.

Differentiator

Problem solved

Functional benefit

Brands

• 33mercury®: Careers site platform that creates bespoke candidate journeys

Products and services

• 33Mercury®
• DE&I Unlocked

Quantifiable outcome

• 48% increase in number of visitors to careers site; 50% increase in average engagement per post; 35% increase in graduate applications in first year
• +8 more outcomes

Named customers11 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• St Luke'sminorOthersCommunity charity partnership with St Luke's, a community hub in south Islington providing services, activities, and events for local residents including after-school clubs, employment support, and community cookery classes. Partnership includes fundraising events, volunteer work, and using employer branding expertise to raise awareness about St Luke's services.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Saltworks: A specialist employer-brand agency focused on strategy, research, and creative production for enterprise clients. Comparable to ThirtyThree as another specialist EB boutique competing for similar employer-brand mandates at European and global enterprise customers.
• Radancy: A full-service talent-marketing and employer-brand agency offering media, creative, and technology (including its own career-site platform). Highly comparable to ThirtyThree as a direct competitor for enterprise EB RFPs and as another agency-plus-technology hybrid serving similar blue-chip clients.
• Universum: A global employer-brand research and agency firm combining talent insights, EVP development, and creative campaign execution. Directly comparable to ThirtyThree because both operate globally with Fortune-500 clients and sell EVP, EB strategy, and creative production as an integrated package.
• Cielo (Employer Brand practice): A global talent-acquisition and employer-brand provider spanning RPO, consulting, and creative. Directly comparable to ThirtyThree because its EB practice services large multinational employers with strategy, content, and technology — competing for the same enterprise EB and EVP mandates.
• Link Humans: A specialist employer-branding agency offering EVP development, research, and creative campaigns to enterprise clients in Europe. Closely comparable to ThirtyThree as a fellow specialist EB agency competing in overlapping EMEA enterprise RFPs with similar service lines.
• Ph.Creative: A creative-led employer-brand and EVP agency working with global brands on talent campaigns, content, and brand activations. Directly comparable to ThirtyThree because both specialise purely in employer branding with strong creative outputs and overlap in target clients (large enterprises, early-careers programmes).
• Employer Brand Consultancy: A UK-headquartered specialist employer-brand agency providing strategy, research, and creative production to enterprise clients. Directly comparable to ThirtyThree because of overlapping geography, overlapping services (EVP, EB strategy, creative campaigns), and overlapping enterprise client base in the UK.
• Hudson Kaplan (HKP): An employer-brand and talent-attraction specialist agency operating internationally with enterprise clients across sectors. Directly comparable to ThirtyThree in service mix (EB strategy, EVP, creative campaigns) and client tier (large multinational employers).

Broad incumbents

• Havas People: The specialist talent-marketing and employer-branding arm of Havas, a global advertising holding company. Comparable to ThirtyThree as an employer-brand competitor but as a broad incumbent leveraging Havas' wider creative and media network rather than a specialist pure-play.
• TMP Worldwide: A long-established recruitment-marketing and employer-brand agency within the broader talent-communications industry. Comparable to ThirtyThree in service line (EB, EVP, career sites) but as a broad incumbent with a wider portfolio of HR-marketing and talent-acquisition offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/thirtythree
• Instagraminstagram.com/weare33

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ThirtyThree