Best before/ best by

Every trip back to the UK i bring back Cheese or if i have a parcel sent over i have Cheese included in it. While going thrlough my stock of Cheese in my freezer i found one block about 800g and it was dated for 13/10/2015. OK so it's out of date but i use it in my egg poacher to make my poached eggs that bit different. Or Cheese omerlet with extra mature cheddar it just perfect and what better way to start a day.