Y Combinator is a startup seed fund based in Mountain View, CA. In 2005, Y Combinator developed a new model of startup funding. Twice a year they invest a small amount of money in a large number of startups. The startups move to Silicon Valley for 3 months, and the YC partners work closely with each company to get them into the best possible shape and refine their pitch to investors. Each batch culminates in Demo Day, when the startups present their companies to a carefully selected audience of investors. Y Combinator has invested in over 1,250 companies including Dropbox, Airbnb, Stripe, Reddit, Instacart and Weebly. The combined market capitalization of YC companies is over $65B.


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Mosaic Ventures is a new Silicon Valley­-style venture capital firm based in London, focused on Series A.  We are investing a $140 million fund in founding teams that are fundamentally reshaping big markets.

Our partners have 30+ years of experience investing on both sides of the Atlantic. In that time, we have invested across 10 countries in over 70 companies that together have created about $200 billion of value. We also bring extensive operating experience at leading West Coast startups.

For more background, please read about what we invest in, our values, and the Mosaic story.