It depends on what you want to do. The cafe is open during the day (not sure about Sunday) and the library is open on weekdays. During the day the building is used by a theatre school and performance spaces are also hired out for rehersal. Check the web site www.efdss.org for evening events. most of which are run by outside promotors.

Sharps Folk Club on Tuesday nights is the only real opportunity to sing or play. The building has never functioned as a social centre for folkies in London.