It'll be inside the rear wheel arch then (O/S). Easy enough to get to, behind plastic arch liner.
Once you get the liner out of the way, remove the whole unit, pump etc, all comes out together after removing bolts and disconnecting fuel pipes.
Getting the filter out of the plastic housing is another thing altogether! Pig of a job. I used a big socket, extension bar and a hammer to get the thing out. Lots of banging and a few choice words, it worked free eventually.