Hello HTUK and welcome to the forum.
The bundled CD that comes with most LG writers typically contains Nero Express/InCD, Cyberlink DVD player and one other Cyberlink product (forgot the name but it is used for video editing).
The version of Nero Express that comes with the bundled CD contains a built in serial number which is unique for each copy. For this reason, it isn't possible to download a copy of it from anywhere and it also makes it impossible for anyone else to provide you a copy of their disc.
Sometimes, Sonic RecordNow/DLA is bundled instead of Nero. I'm not sure how the serial number system works with that, but it doesn't matter because that version isn't available for download either.
There are some free alternatives to some of the components :
I'm not sure what software can be used to substitue the video editing software that comes with the CD because I never use it myself, and thus I don't really know exactly how it works. So I cannot suggest any alternatives to that, as a result.