Thomson ReutersJanuary 22, 2013 06:00
* FTSE 100 down 0.5 pct, off fresh 4-1/2 year highs
* Fresnillo among top fallers after Q4 update
* FTSE 100 in technically "overbought" territory
* Traders expect sell-off in immediate term
By Sudip Kar-Gupta
LONDON, Jan 22 (Reuters) - Britain's benchmark share index fell on Tuesday from its highest level in four-and-a-half years, with technical indicators suggesting a rally that drove the market up in earlier sessions would peter out.