The Times reports that Cadbury's is cutting costs by removing the more expensive chocolates from boxes of Heroes and replacing them with cheaper alternatives. According to the Times,

"Banished from this year’s Heroes is the white chocolate Dream and the Crunchie in a phenomenon that chocolate historians may one day term the Credit Crunchie.

Another relatively expensive chocolate, the Cadbury’s Dairy Milk Whole Nut, has become rarer in this year’s boxes. The place of these time-honoured favourites has been usurped this year by cheaper sweets such as Fudge, Bournville and toffee Eclairs."

 Read more at the Times Online: 'Heroes aren't what they used to be as Christmas chocs hit credit crunchie'