This document discusses open access at UCL. It outlines the benefits of open access publishing and funder requirements. There are two main types of open access - gold, where the paper is immediately available from the publisher site for a fee, and green, where the final manuscript is made freely available in an open access repository like UCL Discovery. The document provides guidance on complying with the REF open access policy, which requires depositing final peer-reviewed manuscripts within 3 months of acceptance. Authors are advised to choose between gold (paid) or green (deposit) open access when a paper is accepted.