A Map of  the Towers in the Guild

If you see an entry with a triangle (Δ) next to it, that usually means that the session is either by arrangement only, or irregular. Or at least it needs some qualification. Be sure to check the Comment line for any explanation.  As a rule, a triangle usually means that it is best to contact the tower before planning a visit on a practice night or visit to join the local band for Sunday ringing.