Leeds is home to 13 SaaS and AI products actively bought by companies on Cledara, led by HLR Lookout. This ranking is built from real purchasing data — what companies actually pay for, not funding announcements — and updates monthly. Data as of 3 September 2026, 17:10 UTC.
| # | Product | Category | Description | Founded | Employees | Funding | 12-mo rank |
|---|---|---|---|---|---|---|---|
| 1 | HLR Lookout | Sales & Revenue | HLR Lookup is an online platform that performs real-time Home Location Register (HLR) queries to check the status of mobile telephone numbers direct from mobile network operators’ subscriber databases. The platform returns technical details about a phone number’s current status and network information via a web interface, bulk upload, or API. | 2,011 | 11-50 employees | ||
| 2 | AppCheck NG | IT & Security | AppCheck provides a cloud-based vulnerability scanning platform that identifies security vulnerabilities across websites, applications, networks, and cloud infrastructure. The platform performs automated scans to detect security risks and help organizations monitor and manage system vulnerabilities. | 51-200 employees | |||
| 3 | Gravita | Marketing & Growth | 2,013 | 2-10 employees | |||
| 4 | Urlbox | Engineering & DevOps | Urlbox is a service that provides a fast and reliable website screenshot API, allowing users to render URLs and HTML into shareable images. | 2,012 | 2-10 employees | ||
| 5 | Little Warden | Engineering & DevOps | Little Warden is a web-based monitoring tool that performs over 30 automated checks on specified URLs up to once per hour. It detects changes in DNS records (e.g., nameserver, MX, IP address), SSL certificate and domain expiration, HTTP response codes, redirect behavior, robots.txt, sitemap validity, and HTML elements like title tags and meta descriptions. Limitations include dependency on interne | 2,017 | 2-10 employees | ||
| 6 | Pacr | Marketing & Growth | Pacr is a platform that allows users to track the spend for all managed account across their media channels. | 2,022 | 2-10 employees | ||
| 7 | RapidSpike | Engineering & DevOps | RapidSpike is a website monitoring platform that detects performance issues, security vulnerabilities, and third-party risks, providing alerts and insights for optimization. | 2,015 | 11-50 employees | $1M - $5M | |
| 8 | Wizu Workspace | Operations & Supply Chain | 2,016 | 11-50 employees | |||
| 9 | Heart Internet | Engineering & DevOps | 2,004 | 51-200 employees | |||
| 10 | Asda | 10,001+ employees | |||||
| 11 | Farnell | Operations & Supply Chain | 1,001-5,000 employees | ||||
| 12 | Jet2 | 2,002 | 10,001+ employees | ||||
| 13 | Uppbeat | Marketing & Growth | 11-50 employees | $10M - $25M |
The complete list is available as <a href="/api/export/startups/united-kingdom/leeds.csv">CSV</a> or <a href="/api/export/startups/united-kingdom/leeds.json">JSON</a>.
The largest SaaS company from Leeds by headcount is Jet2 (10,001+ employees).
2 of 13 have disclosed funding, topped by Uppbeat ($10M - $25M).
The newest entrant is Pacr (founded 2022).
The oldest is Jet2 (founded 2002); the newest, Pacr (2022).
| Category | Products |
|---|---|
| Engineering & DevOps | 4 |
| Marketing & Growth | 3 |
| Operations & Supply Chain | 2 |
| Other | 2 |
| Sales & Revenue | 1 |
| IT & Security | 1 |
Leeds's SaaS scene skews toward Engineering & DevOps — 4 of its 13 tracked companies build engineering & devops software.
Leeds accounts for 1% of the 876 ranked SaaS products founded in the United Kingdom.
HLR Lookout, AppCheck NG and Gravita are the most-used SaaS products founded in Leeds, based on real purchasing data from companies on Cledara. Last updated 3 September 2026, 17:10 UTC.
13 SaaS and AI products founded in Leeds are actively bought by companies tracked on Cledara. Aggregators list more registered startups; this ranking counts only products with real, current usage.
Most lists rank Leeds startups by funding raised or valuation. This one ranks them by adoption — how many companies actually pay for each product — measured monthly from Cledara's purchasing data.