diff --git a/app/domains.yml b/app/domains.yml
new file mode 100644
index 000000000..6c22b0381
--- /dev/null
+++ b/app/domains.yml
@@ -0,0 +1,43 @@
+---
+gov.uk:
+mod.uk:
+mil.uk:
+ddc-mod.org:
+slc.co.uk:
+  owner: Student Loans Company
+gov.scot:
+parliament.uk:
+  owner: Parliament
+nhs.uk:
+  owner: NHS
+nhs.net: nhs.uk
+police.uk:
+communities.gsi.gov.uk:
+  owner: "Ministry of Housing, Communities & Local Government"
+dclgdatamart.co.uk: communities.gsi.gov.uk
+dwp.gov.uk:
+  owner: Deparment for Work and Pensions
+dwp.gsi.gov.uk: dwp.gov.uk
+ucds.email: dwp.gov.uk
+naturalengland.org.uk:
+  Owner: Natural England
+hmcts.net:
+  owner: Her Majesty’s Courts and Tribunals Service
+scotent.co.uk:
+assembly.wales:
+cjsm.net:
+cqc.org.uk:
+bl.uk:
+  owner: British Library
+stfc.ac.uk:
+wmfs.net:
+bbsrc.ac.uk:
+acas.org.uk:
+gov.wales:
+biglotteryfund.org.uk:
+marinemanagement.org.uk:
+  owner: Marine Management Organisation
+britishmuseum.org:
+  owner: British Museum
+derrystrabane.com:
+highwaysengland.co.uk:
diff --git a/app/utils.py b/app/utils.py
index 323b163cb..22fe90292 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -1,5 +1,8 @@
+import os
 import re
 import csv
+import yaml
+
 from itertools import chain
 
 import pytz
@@ -438,75 +441,10 @@ class NotGovernmentDomain(Exception):
 
 class GovernmentDomain:
 
-    domains = {
-        "gov.uk": None,
-        "mod.uk": None,
-        "mil.uk": None,
-        "ddc-mod.org": None,
-        "slc.co.uk": {
-            "owner": "Student Loans Company",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "gov.scot": None,
-        "parliament.uk": {
-            "owner": "Parliament",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "nhs.uk": {
-            "owner": "NHS",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "nhs.net": "nhs.uk",
-        "police.uk": None,
-        "dclgdatamart.co.uk": {
-            "owner": None,
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "dwp.gov.uk": {
-            "owner": "Deparment for Work and Pensions",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "dwp.gsi.gov.uk": "dwp.gov.uk",
-        "ucds.email": "dwp.gov.uk",
-        "naturalengland.org.uk": {
-            "Owner": "Natural England",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "hmcts.net": {
-            "owner": "Her Majesty’s Courts and Tribunals Service",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "scotent.co.uk": None,
-        "assembly.wales": None,
-        "cjsm.net": None,
-        "cqc.org.uk": None,
-        "bl.uk": {
-            "owner": "British Library",
-            "sector": None,
-            "agreement_signed": False,
-        },
-        "stfc.ac.uk": None,
-        "wmfs.net": None,
-        "bbsrc.ac.uk": None,
-        "acas.org.uk": None,
-        "gov.wales": None,
-        "biglotteryfund.org.uk": None,
-        "marinemanagement.org.uk": {
-            "owner": "Marine Management Organisation",
-        },
-        "britishmuseum.org": {
-            "owner": "British Museum",
-        },
-        "derrystrabane.com": None,
-        "highwaysengland.co.uk": None,
-    }
+    _dir_path = os.path.dirname(os.path.realpath(__file__))
+
+    with open('{}/domains.yml'.format(_dir_path)) as domains:
+        domains = yaml.safe_load(domains)
 
     def __init__(self, email_address_or_domain):
 
diff --git a/tests/app/test_utils.py b/tests/app/test_utils.py
index e16ba7bef..e4da7a17a 100644
--- a/tests/app/test_utils.py
+++ b/tests/app/test_utils.py
@@ -335,3 +335,26 @@ def test_get_valid_government_domain_some_known_details():
     assert government_domain.sector is None
     assert government_domain.owner == "Marine Management Organisation"
     assert government_domain.agreement_signed is False
+
+
+def test_validate_government_domain_data():
+
+    for domain in GovernmentDomain.domains.keys():
+
+        government_domain = GovernmentDomain(domain)
+
+        assert government_domain.sector in {
+            'local', 'central', None
+        }
+
+        assert (
+            government_domain.owner is None
+        ) or (
+            isinstance(government_domain.owner, str)
+        )
+
+        assert (
+            government_domain.agreement_signed is True
+        ) or (
+            government_domain.agreement_signed is False
+        )