Premium returns are expected from US transmission and distribution and it says the shares, 6 1/4p dearer at 391 3/4p, are at a 25% discount, given a 515p valuation. That was not lost on chief executive Roger Urwin who has bought an extra 25,000 shares at 385p stretching his holding to 1.09m. Chairman Sir John Parker has also bought an extra 12,800 shares at 390p and now holds 30,229.