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Series C AI companies in London

Companies building AI products, foundation models, and applied ML platforms. Filtered to Series C-stage companies headquartered in London.

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Built from a search like: “Top Series C AI companies in London”

Ranked by current headcount across Series C AI companies in London. Refreshed monthly.

  1. 1
    Basecamp Research· London, England, United Kingdom

    Basecamp Research trains frontier AI models for therapeutic design. Our EDEN models are trained on BaseData, the world’s largest proprietary evolutionary genomic dataset: over 100 billion novel genes sourced through partnerships in more than 30 countries across all seven continents. We are now rapidly advancing a pipeline of EDEN-designed therapeutics towards clinical development. Headquartered in London, we have offices and labs in Boston.

    • Series C
    • 76 employees
    • Founded 2019
  2. 2
    Pulmocide· London, England, United Kingdom

    Pulmocide is a biopharmaceutical company that specializes in tackling difficult-to-treat respiratory diseases. We focus on respiratory fungal infections that can be serious and life-threatening and have significant effects on patients’ quality of life. Our current clinical development focus is on treating patients who have not successfully responded to the standard of care and on the prophylactic treatment of lung transplant patients. Pulmocide’s innovative approach to drug development provides a novel potential therapy that has been specifically designed to treat the most common fungal lung disease, pulmonary aspergillosis. Opelconazole was designed for inhaled delivery to minimize systemic exposure and deliver a high concentration of drug with a long retention time at the site of infection. This approach could improve treatment outcomes in patients with fungal lung disease without increasing systemic side effects and without interactions with other medications. The Pulmocide team is well experienced in the discovery and development of inhaled therapies for respiratory and infectious disease indications. They have particular expertise in the identification of novel compounds that can be delivered directly to the lungs.

    • Series C
    • 19 employees
    • Founded 2013

Find engineers at Series C AI companies in London

Searching for “engineers at top Series C AI companies in London” surfaces this slice of the market. The list above ranks AI companies headquartered in London whose latest disclosed round is Series C, by current headcount, drawn from public LinkedIn and Crunchbase records. With 2 matching companies in Refolk’s index, this is a tight read on where the AI talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series C, AI, in London - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become AI’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Series C AI companies in London hiring” or “founders of Series C AI companies in London who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled AI companies headquartered in London whose latest disclosed funding round is Series C from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Wed, 04 Nov 2026 01:04:50 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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