The pollen filter is located under the bonnet at the back just about in line with the Steering wheel. It's letter box shape and has three black plastic wing nuts.
It can be hard to see but look carefully just below dashboard height.
Undo the three nuts and the cover should just come away. Remove the filter and replace. You'll probably find dealers charge you upto £25 at a service and don't even change it! Just like the fuel filter too!
You can get a Pollen filter for around £6 delivered from e-bay! orginal too!
Mark Whyte
February 2008