Kell v Jones and others [2012] Lexis Citation 115, [2013] All ER (D) 153 (Jan)
The distinction between clerical errors and mistakes which were not inadvertent in that sense was firmly established and s 20(1)(a) of the Administration of Justice Act 1982 did not extend to errors that were made which were not per incuriam in the sense that they had not resulted from the draftsman having failed to advert to the significance of or effect of the words used in his draft.