Heat-related emergency engineering work is being carried out on a track defect, discovered at Waterloo Station earlier this afternoon. As a result, four platforms at Waterloo are not currently in use. There will be disruption to services for the rest of the day.
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There has been major travel disruption on the roads and railways. Fred and Sangeeta introduce our coverage.
Holly has the latest forecast for the east of the region.
Holly has the forecast for tonight and tomorrow in the west of the region.