The trailer to the movie "The Bank Job" - which is based on this story - is here:
https://youtu.be/zNpkdIR-zUw
and there are several shots of walkie-talkies being used at around 1:20 - though whether these are in any way authentic or just movie-props they happened to have to hand is anyone's guess.
Another still from the movie is here:
http://www.shadyoldlady.com/location.php?loc=1217