All wireless services (eduroam, UCLGuest) are available throughout the main UCL campus and UCL buildings across London.
There are also posters displayed in certain locations:
Advertised Wi-Fi locations
For Centrally-bookable spaces (e.g. Lecture Theatres, Lecture Rooms, Libraries, Public areas) and for departments which opt in to advertise there is a list of rooms or areas where Wi-Fi is available.