In 1904 Harding was one of two Welsh forwards chosen to tour Australasia under the captaincy of Bedell-Sivright. By 1908 Harding himself was chosen to captain a British Isles team on a 26 match tour of Australia and New Zealand. Although the Australia leg of the tour was successful, the British and Irish team were outclassed by a very strong All Black team, drawing the second test but losing heavily in the first and third tests.