AI companies hiring the most in United Kingdom
Updated 15 November 2026
As of 15 November 2026, Anthropic has the most open AI roles in United Kingdom: 40 of the 310 open at 21 AI companies MantaWork tracks there.
- Legora is second with 39 open roles.
- Anthropic alone holds 13% of the open AI roles in United Kingdom.
- OpenAI added the most new roles in the last 30 days: 15.
- 8 of these roles are remote (3%).
| # | Company | Open roles | New (30 days) |
|---|---|---|---|
| 1 | Anthropic anthropic.com | 40 | 8 |
| 2 | Legora legora.com | 39 | 11 |
| 3 | Sierra sierra.ai | 36 | 5 |
| 4 | OpenAI openai.com | 35 | 15 |
| 5 | Harvey harvey.ai | 27 | 12 |
| 6 | ElevenLabs elevenlabs.io | 23 | 5 |
| 7 | Scale AI scale.com | 22 | 6 |
| 8 | Cohere cohere.com | 16 | 2 |
| 9 | LangChain langchain.com | 15 | 6 |
| 10 | Mistral AI mistral.ai | 14 | 6 |
| 11 | Cognition cognition.ai | 11 | 3 |
| 12 | Perplexity perplexity.ai | 8 | 3 |
| 13 | Baseten baseten.co | 5 | 1 |
| 14 | Deepgram deepgram.com | 5 | 1 |
| 15 | Together AI together.ai | 4 | 1 |
| 16 | Port getport.io | 3 | 2 |
| 17 | Modal modal.com | 2 | 2 |
| 18 | Twelve Labs twelvelabs.io | 2 | 1 |
| 19 | Fieldguide fieldguide.com | 1 | 0 |
| 20 | MarqVision marqvision.com | 1 | 0 |
| 21 | Moloco moloco.com | 1 | 1 |
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Use them in articles, reports and posts for free. Credit the MantaWork AI Hiring Index and link to this page.
As of 15 November 2026, Anthropic has the most open AI roles in United Kingdom: 40 of the 310 open at 21 AI companies MantaWork tracks there. Source: MantaWork AI Hiring Index, https://mantawork.com/ai-jobs/hiring-index/united-kingdom
Badges for the 10 companies hiring the most
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1. Anthropic
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Anthropic&scope=united-kingdom&rank=1&month=2026-11" alt="Anthropic: #1 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
2. Legora
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Legora&scope=united-kingdom&rank=2&month=2026-11" alt="Legora: #2 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
3. Sierra
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Sierra&scope=united-kingdom&rank=3&month=2026-11" alt="Sierra: #3 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
4. OpenAI
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=OpenAI&scope=united-kingdom&rank=4&month=2026-11" alt="OpenAI: #4 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
5. Harvey
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Harvey&scope=united-kingdom&rank=5&month=2026-11" alt="Harvey: #5 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
6. ElevenLabs
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=ElevenLabs&scope=united-kingdom&rank=6&month=2026-11" alt="ElevenLabs: #6 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
7. Scale AI
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Scale+AI&scope=united-kingdom&rank=7&month=2026-11" alt="Scale AI: #7 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
8. Cohere
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Cohere&scope=united-kingdom&rank=8&month=2026-11" alt="Cohere: #8 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
9. LangChain
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=LangChain&scope=united-kingdom&rank=9&month=2026-11" alt="LangChain: #9 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
10. Mistral AI
<a href="https://mantawork.com/ai-jobs/hiring-index/united-kingdom"><img src="https://mantawork.com/ai-jobs/hiring-index/badge?company=Mistral+AI&scope=united-kingdom&rank=10&month=2026-11" alt="Mistral AI: #10 AI hirer, United Kingdom, 2026-11, MantaWork AI Hiring Index" width="240" height="64"></a>
How we count
- We read each company's own public job board every day and count the roles open that day. Duplicate postings count once.
- The order is the number of open roles and nothing else. Ties go in alphabetical order. No company pays to be listed or ranked.
- Badges are free. A badge shows the company's real rank this month, and showing one does not change the list.
- Work at a listed company? You can correct its careers page, logo or countries. A correction does not change its ranking. Correct a company's details
- "New" means roles we first saw in the last 30 days. "Remote" means the posting says remote.
- Left out: companies whose main business is not AI (Krafton, Palantir, Snowflake), and AI data vendors listed on our AI training board (CrowdGen by Appen, DataForce by TransPerfect, Flitto, Voithru).
- A country gets its own page once 10 or more AI companies are hiring there. Companies without a public job board are not counted yet.
Common questions
Which AI company is hiring the most in United Kingdom?
As of 15 November 2026, Anthropic has the most open AI roles in United Kingdom: 40 of the 310 open at 21 AI companies MantaWork tracks there.
How many AI jobs are open in United Kingdom?
310 open roles at 21 AI companies on 15 November 2026, counted from each company's own job board.
How is the AI Hiring Index counted?
We read each AI company's own job board every day and count the roles open that day. The order is the count only. No company pays to be listed or ranked.
Can I use these numbers?
Yes. Download the CSV and use it freely, with credit and a link to MantaWork.