Start with these two things and we'll go from there depending on what you find:
Make sure your bike is actually an ABS model by looking for a notched ring on the right side of the front wheel where the bottom of the fork meets the axle. (I don't mean that to be insulting or anything; we did have one instance where this was the case, and checking the obvious things prevents goose chases.)
The next good possibility is that the fuse is blown or has been removed. On North American bikes, it's the "A" fuse, and I'm pretty sure it's the same for right-hand-drive models.
The ABS indicator is on a different fuse, but if that were out, you'd probably be missing some of your instrument lights and the ABS might work.
Lev, if your light has always been out someone has probably pulled the bulb, sneaky blighters.
The 1300's ABS indicator is a LED on a PC board screwed into the instrument cluster, so you can't really do the pull-the-bulb trick without a soldering iron.
--Mark