COMPANY PROFILE

ID5

Provides premium publishers and ad tech platforms with a universal ID solution that enables user-level identification without relying on third-party cookies

London, United KingdomFounded 2017Marketing

Valuation $0–100M Latest valuation · 2024

Headcount <100 Current team size

Total funding $10–50M Disclosed equity funding

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About ID5

ID5 operates in the digital advertising sector, providing a universal identity solution designed to improve user recognition while maintaining privacy compliance. The company serves ad tech platforms and premium publishers, addressing the critical challenge of identifying users in a scalable and efficient way. ID5's business model revolves around building an independent, shared identity infrastructure that can be leveraged by various stakeholders in the digital advertising ecosystem. By offering a neutral and privacy-focused identification system, ID5 enhances match rates and increases programmatic revenue for its clients. The company generates revenue through partnerships and service agreements with key players in the ad tech industry.

Source: Dealroom company data

At a glance

Status: Operational
Founded: 2017
Headquarters: London, United Kingdom
Employees: 80
Open positions: 2
Dealroom signal: 85.0/100
Industry: Marketing
Sub-industry: Adtech
Sector: Marketing, Adtech, SaaS, Advertising, Platform, uk is8 creative industries
Client focus: b2b
Investment activity: 1 company, latest Nov 2025
Capital deployed: —
Preferred round: ACQUISITION
Links: Website LinkedIn X

Latest news

Press, funding announcements and product moves mentioning ID5.

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Funding history

3 recorded events

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
SERIES B✓Equity / VC	Apr 2024	$20M	$80M	S4S Ventures · Seventure Partners · Progress Ventures · Aperiam Ventures	↗
SERIES A✓Equity / VC	Mar 2021	$6M	$24M	Alliance Entreprendre · Progress Ventures · 360 Capital	↗

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Growth signals

ID5 website traffic

Latest recorded traffic for ID5 is 17K monthly website visits, up 13.3% over the last three months. ID5's team grew 3.9% over the past year.

Latest monthly visits17K 3-month web change+13.3% 1-year team growth+3.9%

Monthly website visitsMar 2017–Jul 2026

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Open positions

Openings linked to this company in Dealroom

Demand Generation & Partner Marketing Director199 Bishopsgate, Spitalfields, London EC2M 3TY · Marketing & Communication · Jul 25, 2026 Account DirectorUnion, New Jersey, United States · Sales · Jan 16, 2026

2 distinct openings shownExplore hiring signals →

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