Britain helped invent the modern world. But who owns the technologies it creates today?
That question stayed with me while visiting London.
Arm, the Cambridge-born chip designer, trades on America’s Nasdaq. Yet Japan’s SoftBank owns approximately 86.4% of it.
The broader numbers are striking.
I compared the combined market values of companies in CompaniesMarketCap’s broad “Tech” category, grouped by its country classifications:
🇺🇸 United States: $42.0 trillion
🇨🇳 China: $2.40 trillion
🇰🇷 South Korea: $2.19 trillion
🇯🇵 Japan: $1.44 trillion
🇨🇦 Canada: $328 billion
🇬🇧 United Kingdom: $325 billion
🇦🇺 Australia: $120 billion
These are database totals, not measures of entire national tech industries. Coverage and classifications matter, especially for China.
Even so, America’s total is approximately 129 times Britain’s.
And Arm alone was valued at about $273 billion on October 12—roughly 84% of the reported UK total, if that aggregate is accurate.
Most of Britain’s listed tech market value in this dataset rests on one company. Its controlling shareholder is Japanese.
DeepMind offers another example: founded in London, acquired by Google in 2014.
Britain clearly knows how to create globally important technology. But creating it and retaining ownership of the businesses that commercialise it are different achievements.
Foreign acquisitions aren’t necessarily failures. They can reward shareholders, bring investment and help companies grow. Yet they also transfer corporate control.
For Japan, Britain’s experience challenges a familiar explanation for the tech gap with America.
Britain shares America’s language. It has outstanding universities, global finance and exceptional scientific talent.
So if language were the decisive barrier, why is the gap so enormous for Britain too?
Perhaps the deeper questions are how countries scale technology businesses, attract capital and retain ownership as those businesses become global leaders.
Walking through London, surrounded by reminders of Britain’s history, I kept returning to one thought:
Britain once dominated global trade. Today, some of its greatest technological achievements are controlled from abroad.
In the 21st century, creating the future and owning the future are not necessarily the same thing.
Sources: CompaniesMarketCap (Tech, Oct 12, 2026; country totals unverified); Arm FY2026 Annual Report. USD rounded; listed companies only.
