We publish some of our code and documentation on Github at @legislation.
We don’t accept pull requests on our repositories, although you are welcome to fork them and reuse the code for your own purposes if you follow the Open Government Licence. If you’ve built something using our code and want to tell us about it, please contact us to let us know.
We publish our Legislation Schema for CLML, the XML format we maintain to describe UK and EU origin legislation. You can download the schema and find documentation for the schema on our schema page.
You can find our contact details on the Data home page.