The FTSE 100 had a slow start to the week, down 0.32% or 18.43 points to 5,684.94, following mixed sessions in Asia and the US.
Mining shares were the biggest fallers after BHP Billiton and Rio Tinto announced the end of their proposed $116bn iron ore joint venture.
Xstrata dropped 2.25% to £12.82, as Antofagasta fell 2.14% to £12.79 and Vedanta Resources declined 1.97% to £22.43.
Meanwhile, National Grid led early morning risers, up 0.53% to 572.5p, followed by Resolution Ltd, which advanced 0.47% to 255p.
On Wall Street on Friday, the Dow Jones closed down 0.29% or 31.79 points to 11, 062.78 after Federal Reserve chairman Ben Bernanke's hints about a fresh round of fiscal stimulus hit blue chips.
Dismal consumer confidence figures added to the gloom. The Thomson Reuters/University of Michigan index of consumer sentiment fell to 67.9. This is its lowest level since July, and a full point lower than economists had expected.
In Japan, the Nikkei 225 was flat at 9,498.49 as the high value of the yen weighed on sentiment.
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