This is Money | UK shares weak as Greek debt meeting eyed Reuters Volumes modest ahead of Greek debt meeting outcome. * Barclays falls 4 pct as Qatar cashes in warrants. By Jon Hopkins. LONDON, Nov 26 (Reuters) - Britain's top shares were lower on Monday, reversing some of last week's advance, with investors ... Banks drag FTSE lower as Greek debt talks resume FTSE LIVE: Barclays down; trading cautious ahead of meeting over Greek debt |