(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) * FTSE 100 up 0.7%, FTSE 250 adds 0.8% May 14 (Reuters) - British shares rose on Friday, helped by gains in heavyweight financial and consumer staples stocks, while Sanne Group topped the mid-cap index after rejecting a $1.90 billion buyout proposal. The blue-chip index rose 0.7%, with software company Sage Group adding 3% after reporting a better-than-expected 4.4% rise in first-half organic recurring revenue and forecasting growth for the year to be toward the top end of its 3% to 5% range. Banks and large dollar earning consumer staples companies were among the biggest boost to the index. Spirits maker Diageo rose 1.8% after HSBC raised its price target on the stock. In global markets, shares snapped a three-day decline, reflecting an overnight revival on Wall Street, as Federal Reserve officials reiterated that price pressures from the reopening of the economy would prove transitory. The domestically focused mid-cap FTSE 250 index advanced 0.8%. Alternative asset and corporate services firm Sanne Group jumped 27.7% after it rejected private-equity firm Cinven’s 1.35-billion-pound ($1.90 billion) buyout offer. (Reporting by Devik Jain in Bengaluru; Editing by Anil D’Silva) Our Standards: The Thomson Reuters Trust Principles.