Labour Treasury spokesman Chris Leslie has said the European Union's move to cap bankers' bonuses should have been "driven by George Osborne", and that the Government had been "dragging its heels" over banking reforms.
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Wintry scenes across the UK this late in April have not been seen since the mid-1980s.
The Labour leader will also announce an inquiry into anti-semitism and other forms of racism to be chaired by Shami Chakrabarti.
A switch in the wind direction will mean the unseasonably bitterly cold air of the last few days finally gives way.