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* FTSE 100 down 0.9%, FTSE 250 falls 0.6%
Nov 13 (Reuters) - London’s FTSE 100 slipped on Friday as concerns about a jump in COVID-19 infections hit energy stocks and a stronger pound pressured exporters, although the index was still set for its best weekly run since June on hopes of an effective vaccine.
The commodity-heavy index fell 0.9%, with energy and bank stocks being among the biggest decliners.
The domestically-focussed mid-cap FTSE 250 index lost 0.6%, even as a media report said finance minister Rishi Sunak was preparing a further multibillion-pound giveaway to spur consumer spending.
Both the indexes are tracking their best week since June 5 after U.S. drugmaker Pfizer Inc said on Monday its COVID-19 vaccine was 90% effective.
In company news, Premier Inn owner Whitbread Plc jumped 2.9% to the top of the FTSE 100 index after Barclays upgraded the stock to “overweight”. (Reporting by Devik Jain in Bengaluru; editing by Uttaresh.V)
Nuestros Estándares: Los principios Thomson Reuters.