Can I delete a Risk Evaluation or COSHH Assessment?

No — on both the Risk evaluation and COSHH assessments lists, the only action next to an entry (besides opening it) is Move to archive. There's no delete option for either document type.

Archiving asks you to confirm first, then removes the entry from the default list view — tick "Also show Risk Evaluation for SDS on archived locations" (or the equivalent COSHH filter) if you need to find it again later. This mirrors how stock entries work: nothing in this part of the product is hard-deleted by the customer directly, only archived.