As shadow minister for the arts 15 years ago, Johnson laid out his plans in The Art Newspaper

Security guards and specialists alike appraise each others works for selling exhibition to support Mind UK

Screenings of the performance art film will run at institutions across the US and Europe throughout the summer, closing at The Chinati Foundation in October

Storm King Art Center is hosting a Summer Solstice celebration alongside its shows by artists Mark Dion and Jean Shin