The number of pigs in England fell by 1.6% to 3.6 million. The fall is a slight surprise given the good market conditions (prices are below the 2009 level, but input costs are substantially lower). There was an increase of 1.4% in the number of breeding pigs, which may reflect the optimism in the sector.
http://www.defra.gov.uk/evidence/statistics/foodfarm/landuselivestock/junesurvey/documents/Jun2010-Eng.pdf