(Reuters) - London's blue-chip shares dipped on Friday with losses led by oil majors and Diageo after a double rating downgrade, while investors were cautious ahead of key U.S. jobs data that would give further clarity on the health of the world's biggest economy.
The FTSE 100 index <.FTSE> dipped 0.2% by 0711 GMT. The FTSE 250 midcap bourse <.FTMC> was also down by the same level, pressured by building materials supplier SIG <SHI.L>, which slumped nearly 7% after cautious comments on construction activity.
Spirits company Diageo <DGE.L> was among the biggest drags on the main index, slipping 1% after Socgen cut its rating on the stock to sell from buy. Homebuilder Berkeley <BKGH.L> rose 1.7% after pointing to "robust" market conditions in London and the South East of England despite Brexit uncertainties.
(Reporting by Muvija M and Shashwat Awasthi in Bengaluru; Editing by Bernard Orr)
