In this episode of the Digital Digest, we roundup the biggest stories of the week from breaking news out of GTT to a world first from BT. Natalie covers the news that BT has completed 'the world’s first' trial of quantum key distribution (QKD) over hollow core fibre cable – and explains how hollow core fibre works – while in Latin America, Cable & Wireless Panamá has agreed to acquire Claro Panama. Meanwhile, Alan brings us the breaking news from GTT – more of which can be found online here. Joining the conversation this week we welcome Helios Towers CEO Kash Pandya. Ahead of his switch from CEO to non-executive deputy chairman of the company, Kash talks tower industry growth, new markets, D&I in Africa, and how he's going to spend his retirement. Season 3, episode 3 is presented by editor Melanie Mingas, and features editor-at-large Alan Burkitt-Gray and deputy editor Natalie Bannerman. At Capacitymedia.com you can catch up with our latest magazines, newsand events.