A party of six climbers caught up in an avalanche in Glencoe in the Scottish Highlands have now all been located.
However, there is no immediate information on the condition of the three who had been missing, said Northern Constabulary.
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The operation to recover the unexploded bomb near the Houses of Parliament let to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.
A police spokesman said the incident in the Bourke Street Mall on Friday was not related to terrorism.