Diageo fell even as the drinks company said it had made a good start to the current year, after interim sales fizzed. Ocado was lower after RBC Capital Markets downgraded its stance on shares of the online supermarket to 'underperform' from 'sector perform' and slashed the price target to 560p from 800p. "We continue to view Ocado's technology solutions as industry-leading; however on analysis of the group's cash flow potential, its mid-term targets appear ambitious," it said.