Thomson ReutersJanuary 25, 2013 13:00
* FTSE 100 adds 0.3 percent, hits fresh 2013 highs
* Vodafone up again on joint venture sale chatter
* Broker upgrades buoy Shell, IAG, and Polymetal
* Miners weak; Anglo American Q4 production report mixed
By Jon Hopkins
LONDON, Jan 25 (Reuters) - Britain's top shares pushed higher on Friday, reaching a fresh 4-1/2 year peak, led by strength in market heavyweight Vodafone, banks and energy stocks.