Last edited 01 Apr 2022

Gemini principles

Sky-Gemini cropped .jpg

CDBB is a partnership between the Department of Business, Energy & Industrial Strategy and the University of Cambridge, supported by industry, to deliver a smart digital economy for infrastructure and construction and transform the UK construction industry’s approach to the way we plan, build, maintain and use our social and economic infrastructure. It reports to HM Government through the CDBB strategic advisory board.

In December 2018, CDBB published the Gemini Principles, to provide the sector with foundational definitions and values to guide the development of the National Digital Twin (NDT), an ecosystem of digital twins connected by securely shared data.

Digital Twin Toolkit, Developing the business case for your digital twin, published by cdbb in February 2021, stated: 'The mission of the National Digital Twin programme is to enable the National Digital Twin, an ecosystem of connected digital twins that will deliver better outcomes from the built environment. The Gemini Principles are the ‘conscience’ of the National Digital Twin: nine guiding values, to build consensus for the development and ongoing evolution of the National Digital Twin. The principles create alignment within the programme and keep the focus firmly on the overall objective which is to deliver genuine public good. The Gemini Principles have been welcomed around the world, as they provide a framework for ensuring digital strategies and digital twins have clear purpose, are trustworthy, function effectively and also consider future connectivity.’ Ref:

Launched in March 2022 the Information Management Roadmap set out the digital transformation of the construction sector. For further information see

At the end of March 2022 The Centre for Digital Built Britain (CDBB) completed its five-year mission, setting the foundations and direction of travel for UK digital transformation of the built environment. The final phase passes the baton to new organisations, while completing its work within the Construction Innovation Hub. To mark this transition, it launched a campaign to highlight the foundational progress made towards a digital built Britain and a blueprint for the future. Ref

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