London's benchmark index slipped on Monday after rounding off four weeks of gains, as caution prevailed ahead of much-awaited U.S.-China talks later in the day. The FTSE 100 was down 0.3%, while the mid-cap FTSE 250 was up 0.

The FTSE 100 and European stocks edged down on Monday as US and Chinese officials meet in London in a bid to make further progress in easing the trade war between the world's two