United States vs United Kingdom: startup funding compared

The United States. Since 2 June 2025, startups in the United States raised $487.4B across 2,833 rounds, against $22.4B across 606 rounds in the United Kingdom, 21.7 times more. That is 70% and 3.2% of all the capital FundraiseBase tracked worldwide over the period.

2,833 rounds in the United States and 606 rounds in the United Kingdom since 2 June 2025, about 157 and 34 a month.

The median round is $20M in the United States and $7M in the United Kingdom, and the average round $172M and $37M. The median shows the typical round; the average is pulled up by a few very large ones.

The biggest startup rounds in the United States since 2 June 2025 are OpenAI ($122B, 31 Mar 2026), Anthropic ($65B, Series H, 28 May 2026) and Anthropic ($30B, Series G, 12 Feb 2026).

The biggest startup rounds in the United Kingdom since 2 June 2025 are Isomorphic Labs ($2.1B, Series B, 12 May 2026), Nscale ($2B, Series C, 9 Mar 2026) and Wayve ($1.2B, Series D, 24 Feb 2026).

In the United States, AI ($381.8B, 78% of the capital), Robotics & Hardware ($25.4B, 5%) and Health ($21.5B, 4%) lead. In the United Kingdom, AI ($14.5B, 65% of the capital), Health ($1.7B, 7%) and Robotics & Hardware ($1.4B, 6%) lead.

Early-stage rounds (Pre-Seed, Seed and Series A) make up 57% of rounds in the United States and 60% in the United Kingdom. The United States recorded 883 Pre-Seed or Seed rounds and the United Kingdom 262 Pre-Seed or Seed rounds, with a median of $6M and $3.5M.

Startups in the United States raised $232.3B in 711 Series B or later rounds, 48% of the country's capital. In the United Kingdom, $12B in 82 rounds, 53% of the capital.

Y Combinator (178 rounds, 16 led), Andreessen Horowitz (130 rounds, 65 led) and General Catalyst (110 rounds, 39 led) are the most active investors in the United States.

Y Combinator (19 rounds, 2 led), Entrepreneurs First (19 rounds) and Fuel Ventures (18 rounds, 13 led) are the most active investors in the United Kingdom.

460 investors joined rounds in both countries. The most active: Y Combinator (178 in the United States, 19 in the United Kingdom), Andreessen Horowitz (130 in the United States, 3 in the United Kingdom), General Catalyst (110 in the United States, 11 in the United Kingdom), Sequoia Capital (94 in the United States, 7 in the United Kingdom) and Lightspeed Venture Partners (81 in the United States, 10 in the United Kingdom).

San Francisco leads the United States with $133.5B across 529 rounds, ahead of New York ($26.1B). London leads the United Kingdom with $15.6B across 396 rounds, ahead of Cambridge ($1.3B).

In the United States, March 2026 ($133.9B). In the United Kingdom, May 2026 ($4.4B).

In the 90 days to 12 Nov 2026, startups in the United States raised $49.4B across 397 rounds and in the United Kingdom $2.8B across 74 rounds.

FundraiseBase lists startup funding rounds from public announcements: press releases, company posts and news coverage, checked and updated every day. Amounts are in US dollars. Some rounds are never announced, so the figures show what was made public, not every round. Corrections are welcome.