R + V Versicherung AG v Risk Insurance and Reinsurance Solutions SA [2007] EWHC 79 (Comm), [2007] All ER (D) 260 (Jan)
The slip rule is there to do no more than correct typographical errors or matters that are clearly genuine slips or mistakes. It is well established that the slip rule cannot be used to correct errors of substance, nor in an attempt to add to or detract from the original order made by the judge.