Thanks for contacting our association website. As historian for our association, I hold all the commission books & all archives of our 3 aircraft carriers.
I have looked through the Centaur books & found a D A Bird who was a mechanical engineer (stoker) on the 1963-1965 HMS Centaur commission. Unfortunately the 2 main photographs are ones of all the men in that department. They aren't individually named.
I didn't find anything referring to Leslie either.