MEDUSA repository, https://code.metoffice.gov.uk/trac/medusa/
This is the primary archive for MEDUSA's working and in-development code. Currently, direct access to the archive requires a UKMO account, but MEDUSA's code can be supplied upon request.
BGC-val repository, https://doi.org/10.5281/zenodo.1424505
This is the published codebase for UKESM1's ocean analysis tool, BGC-val, available from the Zenodoarchive.