diff --git a/src/python_workflow_submitter/check_visit.py b/src/python_workflow_submitter/check_visit.py
new file mode 100644
index 0000000..03d624d
--- /dev/null
+++ b/src/python_workflow_submitter/check_visit.py
@@ -0,0 +1,5 @@
+import re
+
+
+def check_visit(vis: str):
+    return re.match(r"[a-zA-Z][a-zA-Z]\d\d\d\d\d-\d", vis)
diff --git a/src/python_workflow_submitter/list_workflows.py b/src/python_workflow_submitter/list_workflows.py
index 9daba44..a3d069d 100644
--- a/src/python_workflow_submitter/list_workflows.py
+++ b/src/python_workflow_submitter/list_workflows.py
@@ -6,8 +6,7 @@
 from gql.transport.aiohttp import AIOHTTPTransport
 
 from python_workflow_submitter.auth.keycloak_checker import set_token_env_variable
-
-# TODO check visit is correct (regex)
+from python_workflow_submitter.check_visit import check_visit
 
 
 # TODO add in maintainer when fixed
@@ -124,20 +123,23 @@ async def list_workflows_in_visit(
     }
     """)
 
-    result = await client.execute_async(
-        query,
-        variable_values={
-            "visit": {
-                "proposalCode": visit[:2],
-                "proposalNumber": int(visit[2:7]),
-                "number": int(visit[-1]),
+    if check_visit(visit):
+        result = await client.execute_async(
+            query,
+            variable_values={
+                "visit": {
+                    "proposalCode": visit[:2],
+                    "proposalNumber": int(visit[2:7]),
+                    "number": int(visit[-1]),
+                },
+                "limit": limit,
+                "filter": filter,
             },
-            "limit": limit,
-            "filter": filter,
-        },
-    )
-    json_result = json.loads(re.sub(r"'", '"', str(result)))
-    print(json.dumps(json_result, indent=2))
+        )
+        json_result = json.loads(re.sub(r"'", '"', str(result)))
+        print(json.dumps(json_result, indent=2))
+    else:
+        print(f"Visit '{visit}' is invalid.")
 
 
 async def info_about_workflow(
@@ -152,45 +154,48 @@ async def info_about_workflow(
         visit (str, optional): The visit the workflow is running / was ran on.
         Defaults to str(os.environ.get("VISIT")).
     """
-    token: str = set_token_env_variable()
-    transport = AIOHTTPTransport(
-        url="https://workflows.diamond.ac.uk/graphql",
-        headers={"Authorization": f"Bearer {token}"},
-    )
-    client = Client(
-        transport=transport,
-        fetch_schema_from_transport=True,
-    )
-    query = gql("""
-    query Workflow(
-    $visit: VisitInput!,
-    $name: String!,
-    ) {
-    workflow(
-        visit: $visit,
-        name: $name,
-    ) {
-        name
-        parameters
-        templateRef
-        creator {creatorId}
-        status {__typename}
+    if check_visit(visit):
+        token: str = set_token_env_variable()
+        transport = AIOHTTPTransport(
+            url="https://workflows.diamond.ac.uk/graphql",
+            headers={"Authorization": f"Bearer {token}"},
+        )
+        client = Client(
+            transport=transport,
+            fetch_schema_from_transport=True,
+        )
+        query = gql("""
+        query Workflow(
+        $visit: VisitInput!,
+        $name: String!,
+        ) {
+        workflow(
+            visit: $visit,
+            name: $name,
+        ) {
+            name
+            parameters
+            templateRef
+            creator {creatorId}
+            status {__typename}
+        }
     }
-}
-    """)
+        """)
 
-    result = await client.execute_async(
-        query,
-        variable_values={
-            "visit": {
-                "proposalCode": visit[:2],
-                "proposalNumber": int(visit[2:7]),
-                "number": int(visit[-1]),
+        result = await client.execute_async(
+            query,
+            variable_values={
+                "visit": {
+                    "proposalCode": visit[:2],
+                    "proposalNumber": int(visit[2:7]),
+                    "number": int(visit[-1]),
+                },
+                "name": name,
             },
-            "name": name,
-        },
-    )
-    if result["workflow"] is not None:
-        print(json.dumps(result, indent=2))
+        )
+        if result["workflow"] is not None:
+            print(json.dumps(result, indent=2))
+        else:
+            print(f"No workflow with name {name} found.")
     else:
-        print(f"No workflow with name {name} found.")
+        print(f"Visit '{visit}' is invalid.")
diff --git a/src/python_workflow_submitter/submit_workflow.py b/src/python_workflow_submitter/submit_workflow.py
index 7ea70fe..4aa4bda 100644
--- a/src/python_workflow_submitter/submit_workflow.py
+++ b/src/python_workflow_submitter/submit_workflow.py
@@ -5,6 +5,7 @@
 from gql.transport.aiohttp import AIOHTTPTransport
 
 from python_workflow_submitter.auth.keycloak_checker import set_token_env_variable
+from python_workflow_submitter.check_visit import check_visit
 from python_workflow_submitter.lintyaml import lint_yaml
 
 
@@ -19,12 +20,66 @@ async def submit_workflow_yaml(
         visit (str, optional): The visit to run the yaml within.
             Defaults to str(os.environ.get("VISIT")).
     """
-    if lint_yaml(path):
-        with open(f"{path}") as yamlfile:
-            yamlstr = yamlfile.read().rstrip()
-        dotenv.load_dotenv(dotenv_path="src/.env", override=True)
-        token: str = set_token_env_variable()
+    if check_visit(visit):
+        if lint_yaml(path):
+            with open(f"{path}") as yamlfile:
+                yamlstr = yamlfile.read().rstrip()
+            dotenv.load_dotenv(dotenv_path="src/.env", override=True)
+            token: str = set_token_env_variable()
+
+            transport = AIOHTTPTransport(
+                url="https://workflows.diamond.ac.uk/graphql",
+                headers={"Authorization": f"Bearer {token}"},
+            )
+            client = Client(
+                transport=transport,
+                fetch_schema_from_transport=True,
+            )
+            mutation = gql("""
+        mutation Submit($visit: VisitInput!, $manifest: String!) {
+        submitWorkflow(
+            visit: $visit
+            manifest: $manifest
+        ) {
+            name
+        }
+        }
+        """)
+            result = await client.execute_async(
+                mutation,
+                variable_values={
+                    "visit": {
+                        "proposalCode": str(visit[:2]),
+                        "proposalNumber": int(visit[2:7]),
+                        "number": int(visit[-1]),
+                    },
+                    "manifest": f"""{yamlstr}""",
+                },
+            )
+            name = str(result["submitWorkflow"]["name"])
+            print(f"Job '{name}' submitted to {visit}")
+        else:
+            print("Yaml did not successfully lint, not submitting.")
+    else:
+        print(f"Visit '{visit}' is invalid.")
+
+
+async def submit_workflow(
+    name: str,
+    parameters: dict,
+    visit: str = str(os.environ.get("VISIT")),
+):
+    """Submits a clusterWorkflowTemplate already in the platform.
+
+    Args:
+        name (str): Name of the workflow you wish to run.
+        parameters (dict): paramaters to parse into the workflow.
+        visit (str, optional): The visit to run the yaml within.
+            Defaults to str(os.environ.get("VISIT")).
+    """
 
+    if check_visit(visit):
+        token: str = set_token_env_variable()
         transport = AIOHTTPTransport(
             url="https://workflows.diamond.ac.uk/graphql",
             headers={"Authorization": f"Bearer {token}"},
@@ -34,77 +89,30 @@ async def submit_workflow_yaml(
             fetch_schema_from_transport=True,
         )
         mutation = gql("""
-    mutation Submit($visit: VisitInput!, $manifest: String!) {
-    submitWorkflow(
+    mutation SubmitGeneric
+    ($name: String!, $visit: VisitInput!, $parameters: JSON!){
+    submitWorkflowTemplate(
+        name: $name
         visit: $visit
-        manifest: $manifest
-    ) {
+        parameters: $parameters
+        ){
         name
-    }
+        }
     }
     """)
         result = await client.execute_async(
             mutation,
             variable_values={
+                "name": name,
                 "visit": {
                     "proposalCode": str(visit[:2]),
                     "proposalNumber": int(visit[2:7]),
                     "number": int(visit[-1]),
                 },
-                "manifest": f"""{yamlstr}""",
+                "parameters": parameters,
             },
         )
-        name = str(result["submitWorkflow"]["name"])
+        name = str(result["submitWorkflowTemplate"]["name"])
         print(f"Job '{name}' submitted to {visit}")
     else:
-        print("Yaml did not successfully lint, not submitting.")
-
-
-async def submit_workflow(
-    name: str,
-    parameters: dict,
-    visit: str = str(os.environ.get("VISIT")),
-):
-    """Submits a clusterWorkflowTemplate already in the platform.
-
-    Args:
-        name (str): Name of the workflow you wish to run.
-        parameters (dict): paramaters to parse into the workflow.
-        visit (str, optional): The visit to run the yaml within.
-            Defaults to str(os.environ.get("VISIT")).
-    """
-    token: str = set_token_env_variable()
-    transport = AIOHTTPTransport(
-        url="https://workflows.diamond.ac.uk/graphql",
-        headers={"Authorization": f"Bearer {token}"},
-    )
-    client = Client(
-        transport=transport,
-        fetch_schema_from_transport=True,
-    )
-    mutation = gql("""
-mutation SubmitGeneric
-($name: String!, $visit: VisitInput!, $parameters: JSON!){
-submitWorkflowTemplate(
-    name: $name
-    visit: $visit
-    parameters: $parameters
-    ){
-    name
-    }
-}
-""")
-    result = await client.execute_async(
-        mutation,
-        variable_values={
-            "name": name,
-            "visit": {
-                "proposalCode": str(visit[:2]),
-                "proposalNumber": int(visit[2:7]),
-                "number": int(visit[-1]),
-            },
-            "parameters": parameters,
-        },
-    )
-    name = str(result["submitWorkflowTemplate"]["name"])
-    print(f"Job '{name}' submitted to {visit}")
+        print(f"Visit '{visit}' is invalid.")
diff --git a/tests/test_list_workflows.py b/tests/test_list_workflows.py
index 9ab0985..a92e475 100644
--- a/tests/test_list_workflows.py
+++ b/tests/test_list_workflows.py
@@ -80,6 +80,60 @@ async def test_list_workflows_in_visit(
     mock_json.assert_called_once()
 
 
+@pytest.mark.asyncio
+@patch("python_workflow_submitter.list_workflows.json.dumps")
+@patch("python_workflow_submitter.list_workflows.set_token_env_variable")
+@patch("python_workflow_submitter.list_workflows.Client")
+@patch("python_workflow_submitter.list_workflows.print")
+async def test_list_workflows_in_bad_visit(
+    mock_print: MagicMock,
+    mock_client: AsyncMock,
+    mock_key: MagicMock,
+    mock_json: MagicMock,
+):
+    mock_instance = AsyncMock()
+    mock_key.return_value = "token"
+    mock_client.return_value = mock_instance
+    mock_instance.execute_async = AsyncMock(
+        return_value={"workflowTemplates": {"name": "workflow123"}}
+    )
+    await list_workflows_in_visit(
+        limit=5,
+        filter={
+            "creator": "gmg29649",
+            "template": "example-template",
+            "workflowStatusFilter": {"succeeded": True},
+        },
+        visit="BAD",
+    )
+    mock_instance.execute_async.assert_not_called()
+    mock_json.assert_not_called()
+    mock_print.assert_called_once()
+
+
+@pytest.mark.asyncio
+@patch("python_workflow_submitter.list_workflows.print")
+@patch("python_workflow_submitter.list_workflows.json.dumps")
+@patch("python_workflow_submitter.list_workflows.set_token_env_variable")
+@patch("python_workflow_submitter.list_workflows.Client")
+async def test_info_about_workflow_bad_visit(
+    mock_client: AsyncMock,
+    mock_key: MagicMock,
+    mock_json: MagicMock,
+    mock_print: MagicMock,
+):
+    mock_instance = AsyncMock()
+    mock_key.return_value = "token"
+    mock_client.return_value = mock_instance
+    mock_instance.execute_async = AsyncMock(
+        return_value={"workflow": {"name": "workflow123"}}
+    )
+    await info_about_workflow(name="fakename", visit="BAD")
+    mock_instance.execute_async.assert_not_called()
+    mock_json.assert_not_called()
+    mock_print.assert_called_once()
+
+
 @pytest.mark.asyncio
 @patch("python_workflow_submitter.list_workflows.json.dumps")
 @patch("python_workflow_submitter.list_workflows.set_token_env_variable")
diff --git a/tests/test_submit_to_graphql.py b/tests/test_submit_to_graphql.py
index e7f7f5c..098820e 100644
--- a/tests/test_submit_to_graphql.py
+++ b/tests/test_submit_to_graphql.py
@@ -76,3 +76,51 @@ async def test_submit_stock_workflow(
     )
     await submit_workflow(name="workflow123", parameters={}, visit="ks10000-3")
     mock_instance.execute_async.assert_called_once()
+
+
+@pytest.mark.asyncio
+@patch("python_workflow_submitter.submit_workflow.print")
+@patch("python_workflow_submitter.submit_workflow.dotenv.load_dotenv")
+@patch("python_workflow_submitter.submit_workflow.open")
+@patch("python_workflow_submitter.submit_workflow.lint_yaml")
+@patch("python_workflow_submitter.submit_workflow.set_token_env_variable")
+@patch("python_workflow_submitter.submit_workflow.Client")
+async def test_submit_workflow_to_graphql_bad_visit(
+    mock_client: AsyncMock,
+    mock_key: MagicMock,
+    mock_lint: MagicMock,
+    mock_open: MagicMock,
+    mock_load_env: MagicMock,
+    mock_print: MagicMock,
+):
+    mock_lint.return_value = True
+    mock_instance = AsyncMock()
+    mock_key.return_value = "token"
+    mock_client.return_value = mock_instance
+    mock_instance.execute_async = AsyncMock(
+        return_value={"submitWorkflow": {"name": "workflow123"}}
+    )
+    await submit_workflow_yaml("fakeyaml", visit="BAD")
+    mock_load_env.assert_not_called()
+    mock_open.assert_not_called()
+    mock_print.assert_called_once()
+
+
+@pytest.mark.asyncio
+@patch("python_workflow_submitter.submit_workflow.print")
+@patch("python_workflow_submitter.submit_workflow.set_token_env_variable")
+@patch("python_workflow_submitter.submit_workflow.Client")
+async def test_submit_stock_workflow_bad_visit(
+    mock_client: AsyncMock,
+    mock_key: MagicMock,
+    mock_print: MagicMock,
+):
+
+    mock_instance = AsyncMock()
+    mock_key.return_value = "token"
+    mock_client.return_value = mock_instance
+    mock_instance.execute_async = AsyncMock(
+        return_value={"submitWorkflowTemplate": {"name": "workflow123"}}
+    )
+    await submit_workflow(name="workflow123", parameters={}, visit="BAD")
+    mock_print.assert_called_once()