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According to Bloomberg, the leading index on the UK stock exchange shed 20.72 points to move to 5,980.41 by 12:21 GMT.
It is the first fall in three days for the index, partly due to the protests in Egypt turning violent, while Shell also had a bad day.
The largest oil company in Europe slumped by three per cent to 2,199.5 pence - its biggest decrease since August 19th - after it "increased downtime at major refining facilities, including at the catalytic crackers".
What's more, its fourth quarter earnings totalled at $4.1 billion, less than the $4.7 billion mean average that had been predicted by 16 Bloomberg analysts.
This comes after the FTSE 100 advanced by 0.6 per cent yesterday, putting on 35.90 points as it increased to 5,993.72, following a rise of 4.7 per cent by Imperial Tobacco.
Posted by Greg Secker
