As of 0715 GMT, the blue-chip index FTSE 100 gained 0.3% and the British pound rose 0.09% against the dollar to above 1.34.

The U.K. precision-measurement company agreed to the terms of an improved cash offer from KKR valuing the target at 4.2 billion pound ($5.65 billion)--or 41.75 pounds a share--last week. On Tuesday, ...