An official-looking page can be found on the Royal Museums Greenwich site, and the major details are as follows:
Dates: Thursday 16 February
Fee: FREE - but make sure you book ahead of time!!
Location: National Maritime Museum; Sammy Ofer Wing
Audience: Adults; Young people
Event type: Performance & storytelling
So if you're in the vicinity of Greenwich, UK, I highly recommend you go check it out, and please make recordings if possible to share with the rest of us! :O