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* FTSE 100 up 0.2%, FTSE 250 adds 0.1%

Dec 28 (Reuters) - The UK shares were on track for a three-day winning streak on Thursday, following a jump in mining shares as prices of most metals rose, while a drop in yields indicated diminished risk around interest rate volatility.

The blue-chip FTSE 100 was up 0.2% by 8:18 GMT, while the FTSE 250 midcap index edged 0.1% higher.

UK 10-year gilt yield touched its lowest level since April at open at 3.433%, while the benchmark 10-year bond yield languished near its lowest level since July.

Heavyweight industrial metal miners gained 0.3% and precious metal miners added 0.1% as gold and copper prices climbed, supported by a softer dollar on bets of interest rate cuts by the U.S. central bank in the upcoming year.

Oil and gas shares dropped 0.4% as concerns eased about shipping disruptions along the Red Sea route.

Among individual stocks, BT Group shares fell 1.2% trading ex-dividend.

(Reporting by Khushi Singh in Bengaluru; Editing by Janane Venkatraman )