Julie Townsend, the head of road safety charity Brake, said she supports the targeting of younger drivers in their early 20s and morning-after drivers.
She said that many people do not realise the risks of driving after even one small drink.
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The rain will become heavy at times, and also prolonged.
Rain will spread across the region by lunchtime, turning heavy in places. Staying cloudy with some brightness in the southeast later.
It's more than seven months since Kayleigh Haywood's naked body was found in Leicestershire. Here's timeline of events in the case so far.