RBS (RBS): Q1 pretax loss of £1.4B, widening from a £116M loss in Q1 2011. Much of the loss came from changes in the valuation of RBS' debt. Operating profit of £1.2B vs. £800M consensus. Sets aside an extra £125M for PPI claims. Will repay next week the last of its state emergency loans and resume dividend payments on preferential shares. Shares +2.9% in London.