The biggest faller is Screwfix owner Kingfisher, whose shares fell 2% after it said Brexit would have a short-term negative impact on its business.
The usual big name miners, Antofagasta, BHP Billiton, Anglo American, Rio Tinto and Fresnillo were up between 1.5-2.5%.
The FTSE 100 was up 26.61 at 6,885.76 points.
On the currency markets, the pound was up 0.1% against the dollar at $1.3054 (£1.00) and 0.1% lower against the euro at €1.1536 (£1.00).
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