Time once again for the Science Museum to open its doors for a Lates evening. This month, the theme is Japanese culture, to coincide with the museum's Japan Car exhibition. As well as discount entry to that show, many free activities and performances can also be enjoyed, including a kendo demonstration and Japanese DJs. And, which is more, kid-free, shameless access to the hands-on Launchpad gallery. Free entry, no booking required, 6.45-10.00pm.