Many retirees, freed from their work obligations and looking for adventure, dream of living overseas. Edward Kierklo and Joanna McIsaac-Kierklo don’t dream. They just do. In May 2021, the couple, feeling trapped by the pandemic in their sleepy town in the Sierra Foothills east of San Francisco, decided to break out and trade rural life for 11 months in London. Joanna’s always been a risk-taker, starting at 22, when she moved to Idaho to be a Vista volunteer. London was her idea. “Joanna says, ‘I’m tired of looking at these floors and cleaning an 1,800-square-foot home,’ ” Ed, 73, recalled. “She said, ‘Let’s sell the place and go to London.’ I said okay.” The pandemic played a starring role in…