diff --git a/LICENCE b/LICENCE
new file mode 100644
index 0000000..68b80a5
--- /dev/null
+++ b/LICENCE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2022-2025 Government Digital Service
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 9c87c30..302e143 100644
--- a/README.md
+++ b/README.md
@@ -129,3 +129,7 @@ For example, if you've added a breakpoint into one of the apps and you've trigge
   * template-preview-api The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested    0.0s
   * antivirus-api The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested           0.0s
   * template-preview-celery The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested 0.0s
+
+## Licence
+
+Unless stated otherwise, the codebase is released under [the MIT License](LICENCE). This covers both the codebase and any sample code in the documentation.