Ad Lucem: QED parton distribution functions in the MMHT framework L. A. Harland-Lang, A. D. Martin, R. Nathvani and R. S. Thorne Eur. Phys. J. C, 79 10 (2019) 811 Published online: 01 October 2019 DOI: 10.1140/epjc/s10052-019-7296-0