Came across these two newsreels on Youtube. The fall of Bardia and Halfaya was a major event in the desert war. It was the first substantial and clear defeat of a German force that the Empire forces could point to (CRUSADER itself still being somewhat unclear at this point), yielding several thousand German and Italian POWs, including a German general. It was also the first time a German force commanded by a general surrendered formally to Empire forces (and this in fact would not happen again until May 1943 in Tunisia).
The second video leads off with a nice view of a Heliograph in operation too. Interestingly, it appears this was also the last operation during which the Heliograph was used by the British army, at least according to this article.