The British Business Bank has committed £25 million to fintech Kraken, aiming to secure a London Stock Exchange listing. This state-backed investment underscores the government's urgency to retain high-growth tech companies and reverse a recent exodus of listings to New York and Amsterdam.

Kraken's potential London debut would be a major win for the City, which has struggled to attract large tech floats. The UK's public markets have lost several unicorns in recent years, with founders citing deeper capital pools and higher valuations in the US. This deal signals a concerted push to rebuild that pipeline.

Investors will watch whether this public capital injection convinces other Kraken backers to support a London IPO. The move also tests the government's ability to use its financial arm to steer strategic outcomes, a tactic last seen during the pandemic. A successful listing could set a precedent for future state-backed tech listings.