diff --git a/wagtail/tests/customuser/fixtures/test.json b/wagtail/tests/customuser/fixtures/test.json
new file mode 100644
index 0000000000..4b6f2780eb
--- /dev/null
+++ b/wagtail/tests/customuser/fixtures/test.json
@@ -0,0 +1,127 @@
+[
+{
+    "pk": 1,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "superuser",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": true,
+        "is_staff": true,
+        "groups": [
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "superuser@example.com"
+    }
+},
+{
+    "pk": 2,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "eventeditor",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Event editors"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "eventeditor@example.com"
+    }
+},
+{
+    "pk": 3,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "eventmoderator",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Event moderators"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "eventmoderator@example.com"
+    }
+},
+{
+    "pk": 4,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "inactiveuser",
+        "first_name": "",
+        "last_name": "",
+        "is_active": false,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Event moderators"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "inactiveuser@example.com"
+    }
+},
+{
+    "pk": 5,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "siteeditor",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Site-wide editors"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "siteeditor@example.com"
+    }
+},
+{
+    "pk": 6,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "admin_only_user",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Admin non-editors"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "admin_only_user@example.com"
+    }
+},
+{
+    "pk": 7,
+    "model": "customuser.customuser",
+    "fields": {
+        "username": "corporateeditor",
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Corporate Editor"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "corporateeditor@example.com"
+    }
+}
+]
diff --git a/wagtail/tests/emailuser/fixtures/test.json b/wagtail/tests/emailuser/fixtures/test.json
new file mode 100644
index 0000000000..75610b2ff9
--- /dev/null
+++ b/wagtail/tests/emailuser/fixtures/test.json
@@ -0,0 +1,19 @@
+[
+{
+    "pk": 5,
+    "model": "emailuser.emailuser",
+    "fields": {
+        "first_name": "",
+        "last_name": "",
+        "is_active": true,
+        "is_superuser": false,
+        "is_staff": false,
+        "groups": [
+            ["Site-wide editors"]
+        ],
+        "user_permissions": [],
+        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
+        "email": "siteeditor@example.com"
+    }
+}
+]
diff --git a/wagtail/tests/testapp/fixtures/test.json b/wagtail/tests/testapp/fixtures/test.json
index b3cdfb2e9f..71226c31d3 100644
--- a/wagtail/tests/testapp/fixtures/test.json
+++ b/wagtail/tests/testapp/fixtures/test.json
@@ -771,148 +771,6 @@
         "permission_type": "unlock"
     }
 },
-{
-    "pk": 1,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "superuser",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": true,
-        "is_staff": true,
-        "groups": [
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "superuser@example.com"
-    }
-},
-{
-    "pk": 2,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "eventeditor",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Event editors"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "eventeditor@example.com"
-    }
-},
-{
-    "pk": 3,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "eventmoderator",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Event moderators"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "eventmoderator@example.com"
-    }
-},
-{
-    "pk": 4,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "inactiveuser",
-        "first_name": "",
-        "last_name": "",
-        "is_active": false,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Event moderators"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "inactiveuser@example.com"
-    }
-},
-{
-    "pk": 5,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "siteeditor",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Site-wide editors"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "siteeditor@example.com"
-    }
-},
-{
-    "pk": 6,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "admin_only_user",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Admin non-editors"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "admin_only_user@example.com"
-    }
-},
-{
-    "pk": 7,
-    "model": "customuser.customuser",
-    "fields": {
-        "username": "corporateeditor",
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Corporate Editor"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "corporateeditor@example.com"
-    }
-},
-{
-    "pk": 5,
-    "model": "emailuser.emailuser",
-    "fields": {
-        "first_name": "",
-        "last_name": "",
-        "is_active": true,
-        "is_superuser": false,
-        "is_staff": false,
-        "groups": [
-            ["Site-wide editors"]
-        ],
-        "user_permissions": [],
-        "password": "md5$seasalt$1e9bf2bf5606aa5c39852cc30f0f6f22",
-        "email": "siteeditor@example.com"
-    }
-},
 
 {
     "pk": 1,