The top-share index rallied in the afternoon session to close at 7,164, up 24 points on the day
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Britain's blue chip index closed up around seven points, or 0.10%, at 7,139..
FTSE 100 closed down around six points at 7,132 but big cap miners were up
FTSE 100 finished almost 76 points lower at 7,138, while the FTSE 250 lost over 254 points at 19,863.
Britain's blue-chip benchmark closed down over nine points, or 0.13% to 7,214..
The Footsie perked up after US jobs growth in February was way off the charts
The premier UK blue-chip exchange added around 45 points at 7,203, while FTSE 250 also stormed higher, up 193 points at 19,968.
Around 3.50pm, the FTSE 100 index was up 13 points at 7,160
The UK premier index added 0.43% on the day, while FTSE 250 added over 123 points at 19,690.
FTSE 100 closed around 46 points higher at 7,115. Little brother FTSE 250 also gained ground - up over 180 points at 19,567.
Fears of a trade war have rattled investors, with minerals companies particularly hard hit
Investors didn't want to venture into shares today, or outside much in the UK for that matter
The Footsie may have mainly traded sideways throughout the day but there have been some notable movements among blue-chips.
New Fed supremo Jerome Powell will likely stick to a gradual, three hikes scenario, but the case for a faster pace of tightening is growing stronger, according to Nordic investment bank, SEB
London's blue-chips closed up around 45 points but below the 7,300 level
The FTSE 100 was dragged lower by falls in the Royal Bank of Scotland and British Airways owner IAG