To gain access to the headlights, you have to remove the front bumper, see here.

This is what you'll be left with.



Using a 10mm hex or Torx30, remove the inner bolt.



Look at the front edge of the arch panel and remove these 2 bolts also.



This disconnects it from the body and the arch panel.



On the edge of the scuttle panel, just behind the headlight is a foam piece...



...that can be pulled out to reveal...



...the clip holding the headlight in place. Reach behind and push the clip up with a finger...



...and pull the headlight out.



Disconnect any electrical connections and this will allow you to remove the light from the car.

If you are fitting a replacement headlight, don't forget to swap this bracket over.