Tim Peake, the second British astronaut and the first to fly with the European Space Agency, spent six months in space as part of the Principia mission. Between 15 December 2015 and 18 June 2016, he lived and worked on the International Space Station carrying out scientific experiments. The UK Space Agency sought to capitalise on the interest in this mission, change how people thought about space and use the opportunity to engage and influence the next generation of scientists and engineers.

https://www.gov.uk/government/publications/impact-assessment-principia-campaign