Removal of rear facia panel on "P" Reg Astra 1400?

To access the rear screen washer pipe I will need to remove tailgate panel. How do I do that? I can feel a solid pipe inside the flexi pipe that enters the rear facia panel but it only extends about half way up the flexi pipe. I presume it has come off the jet. The water is running down the side of the boot lid from thisd flexi pipe. Can I just pull it further out or is there a join inside the facia panel running to the jet/nozzle. I do not want to pull it off from somewhere I cannot gain access to along the side of the car.