In 2010, while studying for a degree in Biochemistry at the University of Bath, he was introduced to bobsleigh by British racer John James Jackson. He adapted swiftly to the sport and was part of the four-man team that came first at the 2011–12 British Championships held at Winterberg. Tasker was also part of the four-man teams which represented Great Britain at the 2013 World Championships, coming in fifth and the 2014 Bobsleigh European Championships, winning a silver medal. He was also part of the four-man crew that finished second at the Lake Placid World Cup meeting in 2013.