diff --git a/mavis/test/pages/log_in.py b/mavis/test/pages/log_in.py
index 2147b4b1bcd..fb92da284a6 100644
--- a/mavis/test/pages/log_in.py
+++ b/mavis/test/pages/log_in.py
@@ -3,14 +3,28 @@
 from playwright.sync_api import Page, expect
 
 from mavis.test.annotations import step
-from mavis.test.models import Team, User
+from mavis.test.models import Organisation, Team, User
 from mavis.test.utils import get_current_datetime
 
 
 class LogInPage:
+    """
+    Page object for login functionality with audit logging.
+
+    Usage with organisation tracking:
+        # Automatic org code extraction from team (recommended):
+        log_in_page.log_in_and_choose_team_if_necessary(user, team)
+
+        # Manual org code setting:
+        log_in_page.set_organisation(onboarding.organisation)  # or
+        log_in_page.set_organisation_code("ABC123")
+        log_in_page.log_in(user)
+    """
+
     def __init__(self, page: Page) -> None:
         self.page = page
         self.current_user = None  # Track current logged in user
+        self.current_org_code = None  # Track current organisation code
 
         self.username_input = page.get_by_role("textbox", name="Email address")
         self.password_input = page.get_by_role("textbox", name="Password")
@@ -24,20 +38,32 @@ def __init__(self, page: Page) -> None:
         self.select_a_team_heading = page.get_by_text("Select a team")
         self.start_page_link = page.get_by_role("link", name="Start now")
 
-    def _write_audit_log(self, event_type: str, user: User) -> None:
+    def _write_audit_log(
+        self, event_type: str, user: User, org_code: str | None = None
+    ) -> None:
         """Helper method to write audit log entries."""
         audit_log_path = Path("logs") / "login.log"
         audit_log_path.parent.mkdir(parents=True, exist_ok=True)
 
         timestamp = get_current_datetime().strftime("%Y-%m-%d %H:%M:%S")
         user_role = getattr(user, "role", "unknown")
+        org_code_str = org_code or "unknown"
 
         with audit_log_path.open("a") as file:
             log_message = (
-                f"{timestamp} | {event_type} | {user.username} | {user_role}\n"
+                f"{timestamp} | {event_type} | {user.username} | "
+                f"{user_role} | {org_code_str}\n"
             )
             file.write(log_message)
 
+    def set_organisation_code(self, org_code: str) -> None:
+        """Set the organisation code for audit logging."""
+        self.current_org_code = org_code
+
+    def set_organisation(self, organisation: Organisation) -> None:
+        """Set the organisation for audit logging using Organisation object."""
+        self.current_org_code = organisation.ods_code
+
     @step("Go to log in page")
     def navigate(self) -> None:
         self.page.goto("/users/sign-in")
@@ -48,7 +74,7 @@ def log_in(self, user: User) -> None:
         self.current_user = user
 
         # Write to login audit log
-        self._write_audit_log("LOGIN_ATTEMPT", user)
+        self._write_audit_log("LOGIN_ATTEMPT", user, self.current_org_code)
 
         self.username_input.fill(user.username)
         self.password_input.fill(user.password)
@@ -59,7 +85,9 @@ def log_out(self) -> None:
         if self.log_out_button.is_visible():
             # Write logout to audit log
             if self.current_user:
-                self._write_audit_log("LOGOUT", self.current_user)
+                self._write_audit_log(
+                    "LOGOUT", self.current_user, self.current_org_code
+                )
                 self.current_user = None  # Clear current user
 
             self.log_out_button.click()
@@ -69,13 +97,16 @@ def log_out(self) -> None:
     def log_out_via_reporting_component(self) -> None:
         # Write logout to audit log
         if self.current_user:
-            self._write_audit_log("LOGOUT", self.current_user)
+            self._write_audit_log("LOGOUT", self.current_user, self.current_org_code)
             self.current_user = None  # Clear current user
 
         self.log_out_link.click()
 
     @step("Log in as {1} and choose team {2}")
     def log_in_and_choose_team_if_necessary(self, user: User, team: Team) -> None:
+        # Set organisation code from team's workgroup (which contains ods_code)
+        self.current_org_code = team.workgroup
+
         self.log_in(user)
         if self.select_a_team_heading.is_visible():
             self.page.get_by_role("radio", name=team.name).check()