Nossa Data

ESG

Nossa Data is a London-based ESG reporting software company founded in June 2020 by Julianne Sloane (CEO) and Irina Dumitrescu (CTO).

Reviewed by 7wData
Share Email

On this page

Profile

Nossa Data provides a SaaS platform for companies to collect, manage, and report ESG data across multiple regulatory frameworks and rating agencies.

Nossa Data is a London-based ESG reporting software company founded in June 2020 by Julianne Sloane (CEO) and Irina Dumitrescu (CTO). The company raised a £300,000 pre-seed round from SFC Capital, the Barclays Accelerator (powered by Techstars), and angel investors in early 2021. In May 2022, it closed a £1.2 million seed round led by Symvan Capital and BGF, with follow-on from SFC Capital and Techstars.

The platform helps companies collect, manage, and validate ESG data for frameworks including CSRD, ISSB (IFRS S1 & S2), CDP, EcoVadis, SASB, and MSCI. Nossa Data also supports the Workforce Disclosure Initiative (WDI) of ShareAction/Thomson Reuters Foundation. In 2021, its software enabled all 170 WDI disclosing companies—including half of the FTSE 100—to submit workforce data.

The company lists PostNL, Vodafone, PensionBee, Imperial Brands, Accsys, and the Thomson Reuters Foundation as clients. Nossa Data positions itself as a 'company-centric' alternative to investor-focused ESG tools, emphasizing audit trails, evidence controls, and multi-framework mapping. No subsequent funding rounds, revenue figures, headcount, or layoffs have been publicly disclosed since the 2022 seed round. The company remains privately held with no known acquisition or major leadership changes as of June 2026.

Track Nossa Data and 240+ vendors.

335k+ subscribers read the daily AI & data note. One email, both newsletters. Unsubscribe anytime.

Who buys this

  • Publicly listed companies in the UK and EU subject to CSRD, ISSB, and other mandatory ESG reporting
  • Large private companies responding to investor ESG questionnaires and rating agency requests
  • Companies participating in the Workforce Disclosure Initiative (WDI) or similar investor-backed disclosure programs
  • Firms seeking to streamline EcoVadis or CDP submissions with audit-ready workflows

Publicly disclosed clients

  • PostNL
  • Vodafone
  • PensionBee
  • Imperial Brands
  • Accsys
  • Thomson Reuters Foundation

Strengths and what to watch

Strengths

  • Direct partnership with the Workforce Disclosure Initiative (WDI) gave Nossa Data early access to 170 disclosing companies, including half of the FTSE 100, for product feedback and validation.
  • Platform supports multiple major ESG frameworks (CSRD, ISSB, CDP, EcoVadis, SASB, MSCI) with built-in crosswalk mapping, reducing manual rework for compliance teams.
  • Founded by two women with operational experience in investor relations and ESG disclosure, and backed by institutional investors BGF and Symvan Capital.

Watch for

  • No public funding or revenue updates since the £1.2 million seed round in May 2022; the company may be bootstrapped or struggling to raise a Series A in a crowded ESG software market.
  • Client list is small and heavily weighted toward early adopters from the WDI partnership; limited evidence of broad commercial traction beyond that cohort.
  • ESG reporting software is a crowded space with well-funded competitors (e.g., Workiva, Persefoni, Greenomy, Novata); Nossa Data's differentiation and market share remain unclear.

Key Information

Industry
ESG
Founded
2020
Headquarters
London, UK

Frequently Asked Questions

What is Nossa Data and what does it do?

Nossa Data is a London-based ESG reporting software company founded in June 2020. It provides a SaaS platform for companies to collect, manage, and report ESG data across multiple regulatory frameworks and rating agencies, including CSRD, ISSB, CDP, and EcoVadis.

Who are the founders of Nossa Data?

Nossa Data was founded by Julianne Sloane, who serves as CEO, and Irina Dumitrescu, who serves as CTO. Both have operational experience in investor relations and ESG disclosure, bringing practical expertise to the platform's development and market positioning.

How much funding has Nossa Data raised?

Nossa Data raised a £300,000 pre-seed round in early 2021 from SFC Capital, the Barclays Accelerator, and angel investors. In May 2022, it closed a £1.2 million seed round led by Symvan Capital and BGF, with follow-on from SFC Capital and Techstars.

Which ESG frameworks does Nossa Data support?

Nossa Data supports multiple major ESG frameworks including CSRD, ISSB (IFRS S1 and S2), CDP, EcoVadis, SASB, and MSCI. It also supports the Workforce Disclosure Initiative of ShareAction and Thomson Reuters Foundation, with built-in crosswalk mapping to reduce manual rework.

Who are some notable clients of Nossa Data?

Notable clients of Nossa Data include PostNL, Vodafone, PensionBee, Imperial Brands, Accsys, and the Thomson Reuters Foundation. The platform also enabled all 170 Workforce Disclosure Initiative disclosing companies in 2021, including half of the FTSE 100, to submit workforce data.

What makes Nossa Data different from other ESG reporting tools?

Nossa Data positions itself as a company-centric alternative to investor-focused ESG tools. It emphasizes audit trails, evidence controls, and multi-framework mapping, helping companies streamline submissions for frameworks like CSRD and EcoVadis while reducing manual rework for compliance teams.

Sources

  1. www.nossadata.com — Company description, product features, client logos, framework integrations
  2. www.nossadata.com — £1.2M seed round details, investors (Symvan Capital, BGF, SFC Capital, Techstars), WDI partnership with 170 companies including half of FTSE 100
  3. fintech.global — Corroboration of seed round amount and investors, company positioning as fintech
  4. www.uktech.news — £300K pre-seed round in early 2021, founders Julianne Sloane and Irina Dumitrescu, founding date June 2020