diff --git a/test/test_auth_root.py b/test/test_auth_root.py
new file mode 100644
index 0000000..ea7abd9
--- /dev/null
+++ b/test/test_auth_root.py
@@ -0,0 +1,154 @@
+"""
+This module ensures root user only endpoints do return a correctly formatted 401 when user is not the root user for the org
+DELETE endpoints are not tested
+"""
+import pytest
+from httpx import AsyncClient
+
+from .conftest import no_su_client
+
+from src.organisation.models import Organisation as Org
+from src.user.models import User
+from src.iam.models import Group
+
+
+@pytest.fixture(autouse=True)
+def add_second_org(db_session):
+	db_session.add(User(email="admin@test.org", first_name="Admin", last_name="Test", oidc_id="abcd-efgh-ijkl-4321"))
+	db_session.flush()
+	db_session.add(Org(name="Test Org Two", root_user_id=2, billing_contact_id=1, owner_contact_id=2, security_contact_id=3,
+	           status="approved", intake_questionnaire={}))
+	db_session.flush()
+
+
+@pytest.mark.anyio
+async def test_get_org_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/org?org_id=2")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_patch_org_questionnaire_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.patch("/org/questionnaire", json={"organisation_id": 2,
+	                                                      "intake_questionnaire": {"question_one": "new answer one",
+	                                                                               "question_two": None,
+	                                                                               "question_three": None},
+	                                                      "partial": True})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_org_users_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/org/users?org_id=2")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_post_org_user_auth_root(no_su_client: AsyncClient, db_session):
+	db_session.add(User(email="user@test.org", first_name="User", last_name="Test", oidc_id="abcd-efgh-ijkl-1234"))
+	db_session.flush()
+
+	resp = await no_su_client.post("/org/user", json={"organisation_id": 2, "user_id": 2})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_org_groups_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/org/groups?org_id=2")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_org_contact_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get(f"/org/contact?org_id=2&contact_type=billing")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_patch_org_contact_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.patch("/org/contact",
+	                                  json={"organisation_id": 2, "contact_type": "billing", "email": "user@example.com"})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_service_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/service/?org_id=2")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_iam_group_permissions_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/iam/group/permissions?org_id=2&group_id=1")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_iam_group_users_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/iam/group/users?org_id=2&group_id=1")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_post_iam_group_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.post("/iam/group", json={"name": "New Group", "organisation_id": 2})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_put_iam_group_permission_auth_root(no_su_client: AsyncClient, db_session):
+	db_session.add(Group(name="Test Group Two", org_id=2))
+	db_session.flush()
+	resp = await no_su_client.put("/iam/group/permission", json={"permission_id": 1, "group_id": 2, "organisation_id": 2})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_put_iam_group_user_auth_root(no_su_client: AsyncClient, db_session):
+	db_session.add(User(email="user@test.org", first_name="User", last_name="Test", oidc_id="abcd-efgh-ijkl-1234"))
+	db_session.flush()
+
+	resp = await no_su_client.put("/iam/group/user", json={"user_id": 2, "group_id": 1, "organisation_id": 2})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_get_iam_permissions_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.get("/iam/permissions?org_id=2")
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]
+
+
+@pytest.mark.anyio
+async def test_post_iam_permissions_search_auth_root(no_su_client: AsyncClient):
+	resp = await no_su_client.post("/iam/permissions/search", json={"organisation_id": 2, "action": "read"})
+	assert resp.status_code != 422
+	assert resp.status_code == 401
+	assert "Must be the org's root user" in resp.json()["detail"]