It began with a threat, then descended into squabbles about blame. This year, London Tech Week was so riven with conflict, it made Love Island feel like a yoga retreat. The event kicked off with Sir Keir Starmer picking a scrap with Google and Apple in his keynote, when he insisted the titans of technology block access to naked images on smartphones for under-18s. He set a deadline of three months to activate these hidden settings, which are already in most phones, or face new legislation.