No video at the BBC article.
Took some searching, but I found the video the BBC article is about, but is missing from the article.
Dame Vera Lynn - We’ll Meet Again - 103rd Birthday Celebration
https://www.youtube.com/watch?list=RDK07LKIsDUII&v=K07LKIsDUII&feature=emb_rel_end
It is probably the version from the 1943 movie of the same name.