diff --git a/app/broadcast_message/translators.py b/app/broadcast_message/translators.py
new file mode 100644
index 000000000..c8fde2e58
--- /dev/null
+++ b/app/broadcast_message/translators.py
@@ -0,0 +1,31 @@
+from bs4 import BeautifulSoup
+
+
+def cap_xml_to_dict(cap_xml):
+    # This function assumes that it’s being passed valid CAP XML
+    cap = BeautifulSoup(cap_xml, "xml")
+    return {
+        "reference": cap.alert.identifier.text,
+        "category": cap.alert.info.category.text,
+        "expires": cap.alert.info.expires.text,
+        "content": cap.alert.info.description.text,
+        "areas": [
+            {
+                "name": area.areaDesc.text,
+                "polygons": [
+                    cap_xml_polygon_to_list(polygon.text)
+                    for polygon in area.find_all('polygon')
+                ]
+            }
+            for area in cap.alert.info.find_all('area')
+        ]
+    }
+
+
+def cap_xml_polygon_to_list(polygon_string):
+    return [
+        [
+            float(coordinate) for coordinate in pair.split(',')
+        ]
+        for pair in polygon_string.split(' ')
+    ]
diff --git a/requirements-app.txt b/requirements-app.txt
index a71754683..8688b3922 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -23,6 +23,7 @@ SQLAlchemy==1.3.22
 strict-rfc3339==0.7
 rfc3987==1.3.8
 cachetools==4.2.0
+beautifulsoup4==4.9.3
 
 notifications-python-client==5.7.1
 
diff --git a/requirements.txt b/requirements.txt
index 3e1cefe8c..bb5c70107 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,6 +25,7 @@ SQLAlchemy==1.3.22
 strict-rfc3339==0.7
 rfc3987==1.3.8
 cachetools==4.2.0
+beautifulsoup4==4.9.3
 
 notifications-python-client==5.7.1
 
@@ -42,14 +43,14 @@ alembic==1.4.3
 amqp==1.4.9
 anyjson==0.3.3
 attrs==20.3.0
-awscli==1.18.206
+awscli==1.18.215
 bcrypt==3.2.0
 billiard==3.3.0.23
 bleach==3.2.1
 blinker==1.4
 boto==2.49.0
-boto3==1.16.46
-botocore==1.19.46
+boto3==1.16.55
+botocore==1.19.55
 certifi==2020.12.5
 chardet==4.0.0
 click==7.1.2
@@ -60,19 +61,19 @@ flask-redis==0.4.0
 future==0.18.2
 geojson==2.5.0
 govuk-bank-holidays==0.8
-greenlet==0.4.17
+greenlet==1.0.0
 idna==2.10
-importlib-metadata==3.3.0
+importlib-metadata==3.4.0
 Jinja2==2.11.2
 jmespath==0.10.0
 kombu==3.0.37
-Mako==1.1.3
+Mako==1.1.4
 MarkupSafe==1.1.1
 mistune==0.8.4
 monotonic==1.5
 orderedset==2.0.3
 packaging==20.8
-phonenumbers==8.12.15
+phonenumbers==8.12.16
 pyasn1==0.4.8
 pycparser==2.20
 pyparsing==2.4.7
@@ -86,9 +87,10 @@ PyYAML==5.3.1
 redis==3.5.3
 requests==2.25.1
 rsa==4.5
-s3transfer==0.3.3
+s3transfer==0.3.4
 six==1.15.0
 smartypants==2.0.1
+soupsieve==2.1
 statsd==3.3.0
 typing-extensions==3.7.4.3
 urllib3==1.26.2