Do authors need to deposit previously published papers in PMC/UKPMC?
No. The policy only applies to research papers resulting from grants awarded after 1 October 2005, and from 1 October 2006 to all grants regardless of award date. While the Trust would be delighted to see previously published papers deposited, we are in no position to insist on this due to the existence of copyright agreements between researcher and publisher which pre-date our Grant Conditions. We have specifically advised our researchers to ensure that no such agreements are breached.