Found it:
-First, take the cap off the rear wiper and unscrew the bolt holding the wiper on.
-Then hold the wiper tight at the bottom so it doesnt feel like your going to snap the wiper off, and push/pull anti clockwise, you might have to give a good tug(i know it feels like its going to snap but hold it tight ) then should just screw off.
-Then open your boot and remove the inner lower plastic panel oppoisite side to where the wiper was joined( i managed to get my fingers behind the panel up near where it joins to the top plastic panel and tug it firmily all the way round un popping the plastic out)
-Then you will see the wiper motor held in with 3 gold coloured nuts. disconnect the elect plug 1st, makes it a lil easier. then remove the 3 bolts and the wiper motor will come off.
-To fill the hole where the wiper was, i used a 25mm rubber grommit from b&q/wickes. and it plugged straight in. perfect fit!
-Next is to remove the rear squirter.
-You can remove the hose linked to it from the top of the inner boot. (no need to remove any plastic) its between the join of the boot and the car. remove the 4 inch hose linked between the hose from the car and the squirter and fit is back the opposite way around. the hose has a one way mechanism so the water can only pass through one way(there is a lil arrow on it) once you placed it the opposite way round, no water can get through.
-Then you need to get some thin pliers and poke them up though the hole near the squirter(from the inner side of the boot), there is a lil bolt there. squeeze the bolt and push up and the squirter should pop out the top.
-Once done, i put a 20mm rubber grommit from the outerside of the car in the squirter hole and i used black silicone to secure it and prevent it from leaking. put plenty of the silicone under the grommit so it would fill the hole underneath for extra strength and to prevent water from getting in.