John considers three recent cases about the validity and effect of break notices:- Friends Life Ltd v Siemens Hearing Instruments Ltd [2014] EWCA Civ. 382, Marks & Spencer plc v BNP Paribas Securities Services [2014] EWCA Civ. 603 and Friends Life Management Services Ltd v A&A Express Building Ltd [2014] EWHC 1463 (Ch)