Checkstep
Natural Language Processing · AI Content Detection
Venture roundlatest round · Apr 2026 · 6 mo ago
1backers · Onstage
5team · UK accounts · Dec 2025
A-ratedvisa sponsor licence, United Kingdom
Overview
Checkstep builds content moderation infrastructure with machine learning and human review. Its platform helps platforms meet online safety regulation. The company serves marketplaces, communities and media services.
Funding and backers
Latest round
Venture round
Apr 2026 · 6 mo ago
Team
5
UK accounts · Dec 2025
Backers
1
Onstage
The money's age
Fresh money
6 months since the last round · not hiring
Momentum
20/100
fresh money
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Apr 17
Raised a round Venture round
Aug 30, 2025
Raised a round Venture round
May 15, 2025
Raised a round Venture round
Oct 29, 2022
Raised a round Venture round
Jun 30, 2022
Raised a round Venture round
Jun 29, 2021
Raised a round Venture round
May 4, 2020
Founded per the company register
Tractionpublic signals, read monthly
Web presence
top 0.82%
of 133.2M domains by links, Common Crawl
Hacker News stories
1
best: 1 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Apr 2026 | — | — | find-and-update.company-information.service.gov.uk |
| Venture round | Aug 2025 | — | — | find-and-update.company-information.service.gov.uk |
| Venture round | May 2025 | — | — | find-and-update.company-information.service.gov.uk |
| Venture round | Oct 2022 | — | — | find-and-update.company-information.service.gov.uk |
| Venture round | Jun 2022 | — | — | find-and-update.company-information.service.gov.uk |
| Venture round | Jun 2021 | — | — | find-and-update.company-information.service.gov.uk |
Registers and programsofficial lists and records that name the company
| Legal entity | CHECKSTEP LIMITED | Companies House |
| Registered | 4 May 2020 |
Backed byfrom the funds' portfolios and accelerator catalogs
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NEVER OUT OF DATE. High-quality Machine Learning Products & Solutions for High Performance Standards.
GuardinAI is an innovative tool for scalable protection of your users from bad & offensive content with AI solutions for content moderation.
Visa sponsorship
A-rated
Sponsor licence
Skilled Worker
Visa route
0
Open roles in United Kingdom
In the register as CHECKSTEP LIMITED, London
Other sponsors in the same field
Turnitin 
Verifone 
Dataminr 
DeepL
Alert me
UK Home Office · checked Nov 5, 2026 · Visa details by country
Financials
Latest round
Venture - Series Unknown
Funding rounds
6
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
OnstageVia a fund
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
Report
Checkstep uses AI to moderate online platforms. Here's the 7-slide pitch deck it used to raise $5 million in seed funding.
Checkstep has seen increased demand for content moderation services as the Online Safety Bill and Digital Services Act get momentum in the UK and EU.
Read more
Report
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
London
United Kingdom
HQ
1-10 est. staff
10 Bolt Court, 3rd Floor, London, EC4A 3DQ, GB