Thanks for the reply RobXK, appreciated. I managed to get to the bottom of this but lost one chrome badges in the process. I now know that each badge (item 5 on the diagram) is locked in place with 4 plastic studs that press into holes in the bodywork and fit into small slots on the back of each badge (chromed plastic). Its not possible to see these studs on the parts diagram and even Bennets could not tell me if the new chrome badge came with studs. Removing the badge without damaging either the stud or the plastic slot on the badge is virtually impossible even with the greatest of care. I did however manage to save one badge and 4 of the 8 studs but had to buy one new badge which came with 4 new studs. The badge costs just under a whopping £90. I was having the lower side skirts and wings painted (black metallic midnight) to remove gravel rash hence the removal. The painter removed the side skirts to repaint and made a fantastic job overall, looks like new or better.