Freshfields and Anthropic announce joint development of AI legal tools as the Bank of England and UK Finance push banks to deploy AI cyber defences against frontier model threats

Freshfields and Anthropic have announced a collaboration to jointly develop AI legal tools, according to Reuters, in one of the most high-profile AI partnerships between a Magic Circle firm and a frontier AI developer. The deal places Freshfields at the leading edge of City firm AI strategy, and the nature of the joint development arrangement — rather than a simple licencing relationship — suggests the firm is seeking to shape how large language models are deployed in legal workflows, rather than simply consuming off-the-shelf products. No financial terms or specific use cases were disclosed in available sources. Separately, the Bank of England and UK Finance (the trade body representing UK banks and financial services firms) have jointly warned banks and insurers to strengthen their cyber defences using AI, citing the threat posed by emerging frontier AI models such as Anthropic's Mythos. The BoE guidance links cyber resilience directly to the capabilities of the same class of AI systems that Freshfields is now partnering to deploy, creating a sharp regulatory context for City firms considering their own AI adoption: the tools being built are simultaneously the subject of systemic risk warnings from the UK's central bank. The Lloyd's Market Association (LMA) has also published a new AI adoption toolkit this week, building on its April 2026 survey on AI risk management, to guide managing agents through governance frameworks as AI adoption accelerates across the Lloyd's market.