UKIP leader Nigel Farage has declared himself out of the Eastleigh by election on Twitter. He said: "I will not be standing in the Eastleigh by election but UKIP will be fielding a candidate."
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The RMT Union's comments come as it's announced a new operator will takeover the South West Trains franchise.
Monday's forecast for the west of the region
Monday's forecast for the east of the region