Coaches and trains on their way now from across the UK carrying marchers against austerity. Tweet us your messages and pictures #oct20
Lots of activity in London; the Unite band is relaxing ready for later
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Another cold, frosty and foggy night for many. Northern and western areas will see thickening cloud, patchy rain and milder temperatures.
Temperatures have already plunged to -12C in some parts of the UK this winter - but Thursday could be the coldest day yet.