He also played in the following game against Wales, where Ireland clinched both the Triple Crown and the Five Nations Championship.

During the 1950 Five Nations, Henderson made only a single appearance for Ireland due to injury, but was still included in the British Lions squad that travelled to New Zealand and Australia that year.

[3] Ireland recorded their first victory over a team from the southern hemisphere in January 1958, when they beat Australia during their tour of Europe.

[4] In his last game as Ireland captain in 1958 against France, Henderson switched position from centre to full-back.

He finished his international career at full-back, playing all four games in the 1959 Five Nations championship in the position.