The search bar is now situated on this page only (it does have some limitations) however it is easy with V3.0 of this website to use the menu items to :-

List all EVENTS in chronological order (or reverse chronological order).

List all VENUES in alphabetical order and then see all events at a selected venue.

List all events within a geographical area with LOCATIONS defined by County, City or London Central, East, North, South and West.

List ORGANISTS to learn “what events a specific Organist is playing”.