The results of a research study recently carried out in collaboration between Bio Nano Consulting, University College London and King Abdulaziz University in Jeddah, Saudi Arabia are featured in the inside front cover of Chemical Science from August 2016 (Issue 8). The paper reports on the novel synthesis, material characterisation, theoretical/computational understanding of the electronic structure and photoelectrochemial functionality of bismuth oxyhalides. These are layered V-VI-VII ternary semiconductor materials with band gaps in the visible region of the electromagnetic spectrum that have application as visible light photocatalysts. The aerosol assisted chemical vapour deposited BiOBr films produced as a result of this work showed the highest photocurrent reported in literature to date (0.3 mA cm-2 at 1.23 V vs. RHE), making it an excellent candidate for solar fuel production.