Weaker pound lifts FTSE 100 as Britons brace for extended lockdown

(Reuters) - Britain's exporter-heavy FTSE 100 rose on Thursday, boosted by a weaker pound as Britons braced for a longer lockdown to curb the spread of the new coronavirus pandemic.In a widely expected move, UK's foreign minister Dominic Raab said the country will extend its lockdown for at least three more weeks as a relaxation of the measures would damage both public health and the economy.The FTSE 100 closed up 0.6% in a volatile session, with drug companies GlaxoSmithKline and AstraZeneca ..