LONDON, Dec 15 Reuters Global shares slid for a second day on Thursday as major central banks deliver their final policy decisions of the year, with the U.S. Federal Reserve signalling that it expected interest rates to stay higher for longer.

In Europe, the Swiss National Bank delivered an expected halfpoint hike that brought rates to a 14year high of 1.

The franc reversed early losses and rose against the euro as well as the dollar after Chairman Thomas Jordan said the central bank will keep propping up its currency. ,

Hot on the heels of the Swiss, the Norges Bank raised rates by a quarterpoint to 2.75 and indicated it has not finished tightening monetary policy.

And next up is the Bank of England, which is expected to raise rates by half a point to 3.5 at 1200 GMT. Just over an hour later, the European Central Bank will also announce its rate decision.

The MSCI AllWorld index was last down 0.5, set for a second straight day of declines, after losses on Wall Street the previous day drove the SP 500 down 0.6.

Hot on the heels of the Swiss, the Norges Bank raised rates by a quarterpoint to 2.75 and indicated it has not finished tightening monetary policy.

And next up is the Bank of England, which is expected to raise rates by half a point to 3.5 at 1200 GMT. Just over an hour later, the European Central Bank will also announce its rate decision.

The MSCI AllWorld index was last down 0.5, set for a second straight day of declines, after losses on Wall Street the…