This page used to show a live status of whether the networking lab in Anglesea building was free or not. Sadly, with the removal of the Room Check website, there is no longer anywhere to scrape this information from.
If you are interested, you are able to add the room's timetable to the new timetabling system, and view it there. From timetabling.port.ac.uk, select the "Toggle timetable list" button (it's a small calendar in a circle, in the top right) and clicking "Add," where a list of rooms is presented. If you are on this page, I am sure you can figure it out!
As a reminder, even if there is a session happening when you wish to visit, you are always welcome to ask the lecturer and the current class if you can drop in, assuming your computer is free and you do not disturb the session. Enjoy your time in the lab!