'A one-man, one-cat mission to cheer people up' - The MirrorWhen Travis Nelson arrived in London, he expected to embark on a new life and a new job. Coming from California, he'd uprooted his wife and his cat, Sigrid, and planned to be here for the long haul. Then Covid-19 struck. Travis's new job vanished as the company cut staff. For two years, and through successive lockdowns, he was stuck in limbo in an unfamiliar city, trying to find his way.To keep him...