Superdry and Drax are the biggest fallers on the FTSE 250 so far this morning, down 7.5% and 5.6% respectively.
Mining groups dominated the risers, led by gold specialist Centamin which is ahead 2.8% at 121.8p.
It was the same on the FTSE 100 where Rio Tinto's share price gained the most, up 1.6% at £41.28.
On the fallers, BP led the way, down 0.8% at 561.9p.
Overall, the FTSE 100 has trimmed early gains and is now up 0.08% at 7,661.76.
The FTSE 250 is ahead 0.23% at 20,818.44.