Lambert's debut for was against in January 1907. Selected to play on the wing only after the original choice had pulled out, Lambert scored five tries, a record for any nation, which stood until Marc Ellis scored six tries for against in the 1995 Rugby World Cup. Lambert was subsequently dropped from the England team for the remainder of the season. In the meantime, he continued to play for Harlequins and was again invited to tour with the Barbarians, winning two of the three matches.
