Thank you for your replies. I have just installed get-iplayer and i'm giving it a go. It wouldn't download the program to start off with because I needed to add something for SWF verification which I found here:
I am now downloading the program. According to here:
the BBC does implement DRM on it's downloadable content. According to the get_iplayer website:
get_iplayer does not circumvent any digital rights management security
The BBC do implement DRM on their Adobe Air downloadable files and therefore get_iplayer is not useful with those.
which is why I said I didn't think that get-iplayer would work. I am unsure of how get_iplayer actually works and tbh i'm not that comfortable with using it.