The FTSE 100 index was up 42.80 points, 0.5%, at 8,893.43. The FTSE 250 was up 158.02 points, 0.8%, at 21,331.35, and the AIM All-Share was up 2.91 points, 0.4%, at 764.34.

The UK prime minister said he wants "more co-operation" over migration and will raise the issue with the country's president as the number of people making the journey climbed again over the weekend, ...