ROCHESTER, ENGLAND - DECEMBER 18:  A postal worker pushes a trolley full of post to be sorted at Royal Mail's Medway Sorting Centre on December 18, 2012 in Rochester, England. The recently opened £70 million mail centre replaces four sites also based in Kent and handles an average of 3.2 million items per day. Tomorrow, December 20, sees the last day for Christmas first class post with the centre working flat out to deliver mail across the country and overseas on the busiest week of the year.  (Photo by Peter Macdiarmid/Getty Images)