All
Thanks for your help.
So
Remove parcel shelf and two torx screws that hold the shelf carrier.
Remove the seatbelt panels by pulling them and remove the top of the boot side panel by pulling it down, you will need a set of trim removal tools.
You now need to remove the plastic bracket that holds all this in place by removing three gromits with the tools and then slide the bracket towards the front with a bit of gbh and remove it.
The plug is attached to the bodywork with a grommet so use a tool to prise it out and then pull the cable so you can undo the connector.
Use a draw wire on the plug and pull it through the hole having pulled out the rubber gasget. This needs a bit of patience.
Remove the old strut by prising the spring clips.
Install the new one and put trims back in reverse order.
When all back press button and will close with beep. Open and manually set height and hold the button to set it when you will hear a beep and the lights flash.
Hope this helps if anyone else? has the same problem. Water has corroded the spring.
John