• Jacobs’ PA Consulting joined a Cosine-led coalition to co-design Lumen Sovereign, billed as the UK’s first fully sovereign frontier AI model.
• Initial focus targets a nuclear-trained large language model for UK civil and defense nuclear operators to address skills gaps and preserve expertise.
• Work aims to support sovereign AI deployment across other highly regulated sectors, including government, defense, financial services, healthcare, critical infrastructure.
• Initiative aligns with UK efforts to expand domestic AI capability, including the Sovereign AI program and an AI Hardware Plan.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Jacobs Solutions Inc. published the original content used to generate this news brief on September 21, 2026, and is solely responsible for the information contained therein.