Refolk
GuidesStart a free search

Series A AI companies in London

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

Edit the query above, or pick a refinement. 500 free credits on sign-up, no card needed.

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

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

  1. 1
    Google DeepMind· London, England, United Kingdom

    We’re a team of scientists, engineers, machine learning experts and more, working together to advance the state of the art in artificial intelligence. We use our technologies for widespread public benefit and scientific discovery, and collaborate with others on critical challenges, ensuring safety and ethics are the highest priority.Our long term aim is to solve intelligence, developing more general and capable problem-solving systems, known as artificial general intelligence (AGI). Guided by safety and ethics, this invention could help society find answers to some of the world’s most pressing and fundamental scientific challenges. We have a track record of breakthroughs in fundamental AI research, published in journals like Nature, Science, and more.Our programs have learned to diagnose eye diseases as effectively as the world’s top doctors, to save 30% of the energy used to keep data centres cool, and to predict the complex 3D shapes of proteins - which could one day transform how drugs are invented.

    • Series A
    • 10.4k employees
    • Founded 2010
  2. 2
    Apoha· London, England, United Kingdom

    At Apoha, we are unlocking the missing layer of molecular science.Sequences told us what a molecule is. Structures showed us what a molecule looks like. But molecular behaviour, the layer that determines whether a drug works, a formulation holds, or a material performs, has remained largely elusive. Until now. Apoha has invented the world's first platform to resolve States, the third fundamental data class of molecular science. We call this new paradigm Liquid State Intelligence, capturing the complete behavioural state of matter, molecules, and materials under real-world conditions, using as little as 10μg of sample. The data we generate is something no simulation, no model, and no amount of compute can reproduce. And with every measurement, it becomes more powerful. Exciting things are in the pipeline. Stay tuned.

    • Series A
    • 33 employees
    • Founded 2021
  3. 3
    Huq Industries· London, England, United Kingdom

    Huq is a leading provider of data intelligence, delivering accurate and actionable mobility insights to empower strategic professionals in government, retail, real estate, and finance to make informed decisions with confidence.Founded in 2014, Huq has been at the forefront of utilising cutting- edge technologies and innovative mobility research methods. Today, Huq proudly serves 300+ local councils, investors, as well as some of the largest retail and real estate companies.

    • Series A
    • 24 employees
    • Founded 2014

Find engineers at Series A AI companies in London

Searching for “engineers at top Series A 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 A, by current headcount, drawn from public LinkedIn and Crunchbase records. With 3 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 A, 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 A AI companies in London hiring” or “founders of Series A 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 A 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: Fri, 18 Sep 2026 17:46:09 GMT

Search this list

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

500 free credits on sign-up, no card needed.

Related lists

See all company lists.

Slice this list a different way

Common questions

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.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Fri, 18 Sep 2026 17:46:09 GMT. For a list built against the index as it stands today, sign up and run the search live.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

Try it on the search you came here for

Stop building boolean strings. Just describe the person.

Type one sentence. I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web as it is right now, and hand back a ranked list with the reason next to every name.

  1. 01Describe them

    One plain sentence. Role, city, stack, stage, whatever matters to you.

  2. 02I read the web live

    GitHub, public LinkedIn and Crunchbase records, the open web. Not a database that went stale last quarter.

  3. 03You read the shortlist

    Ranked, with the reasoning under every name. Open a profile, ask a follow-up, narrow it down.

  • No boolean, no filters, no seat to buy. One box.
  • Read at search time, so a profile updated yesterday counts today.
  • Every step visible as it runs, every name with its reason.

500 free credits on sign-up. No card, no demo call. See real searches.

Keep exploring