Gregor was the trouble-shooter for the design and construction of the controversial Millennium Dome in Greenwich for four years, working with architects such as Richard Rogers and Zaha Hadid, and artists such as Anish Kapoor. He helped deliver 10 installations at the Dome, including the Rest Zone, a contemplative, immersive experience of art and sound, featuring Artangel’s 1,000-year composition ‘Longplayer’.