There's queueing traffic after an accident which is now on the hard shoulder on the M4 Westbound between J32 A470 / A4054 (Coryton Interchange) and J33 A4232 (Cardiff West And Services). All lanes have been re-opened.
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An inquest is to be held into the deaths of four family members who died when their car was involved in a crash near Aberystwyth in June.
Cold and windy with sunny spells and showers of rain and snow.
The charity says the increase is partly due to people calling for help sooner, instead of attempting to rescue themselves.