This report includes data for Imperial College London APC payments made from 1 January 2015 to 30 June 2015. As a part of its work on negotiating the Total Cost of Ownership with journal publishers, Jisc Collections has been gathering and openly releasing data on article processing charge (APC) payments made by UK higher education institutions (HEIs). Making this data openly available has helped to raise awareness of the amount of money being paid for APCs, especially to those publishers that also receive large sums in subscription costs. A standard template has been created which is designed to be used by HEIs to record and monitor their APC payments. For further details please see: https://www.jisc-collections.ac.uk/Jisc-Monitor/APC-data-collection/