Shows in London and Amsterdam and new works marking 300 years since Christopher Wren’s death reveal artists putting concept first, despite the paralysis of choice offered by infinitely programmable LEDs

Composer has funded a two-year, £60m renovation of the Theatre Royal Drury Lane to turn it into a public gallery and heritage attraction

Agencies seem to be betting that time and increased exposure to the kingdom will wear down Western qualms over its human rights record

Precision illumination can draw out a work’s fine details without physical intervention, but some doubt it will ever replace traditional conservation

Cannon, Millennium, Southwark and London bridges have been fitted with LED lighting as part of a £45m public art project