This document discusses the Wellcome Trust's open access policy and efforts to increase compliance. The Trust requires that research funded in whole or part be made freely accessible within 6 months. It supports open access to improve research quality and integration of literature with data. Most publishers now offer compliant options, though some improvement is still needed. An initial study found 27% of papers were openly accessible, though compliance is increasing over time. The Trust is working with publishers and researchers to further improve compliance.