Lucas Oil Slick mist to remove bugs , dirt and guts , in a pinch its good to clean glass as well .
After that i usually go over it again with Chemical Guys Speed Wipe spray and gloss detailer .
Again , everyone has their own preferences.
Depend where you come or came from in England . Lots of different accents as there is in USA . Ever heard a true Cockney speak, a Liverpudlian , Scoucer , Cornishman Welshman .