The International Search Summit conference in London is an annual event which next year will be held in May 2021 (specific dates TBC) and features a range of expert speakers discussing a broad range of topics devoted to helping your company improve their global search performance.
Therefore you can expect to hear from search engine designers on how they calculate your global rankings as well as speakers from individual nations who can provide guidance on improving your local results in that particular nation. The conference usually finishes with an open discussion session so that you can share your insights from the day with fellow professionals as well as directing questions to the speakers for further elaboration on the concepts discussed.
Website: http://www.internationalsearchsummit.com/london.html