Alton Towers' new roller-coaster, billed as the first of its kind in the world, will preview today, ahead of its opening on May 23.
'The Smiler' cost £18 million to build, has a drop of 30 metres and a maximum speed of 52 miles per hour.
The ride is the world's first 14 looping roller-coaster.
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Wednesday morning will be frosty with icy patches. Plenty of sunshine all day and very little wind but it will stay rather cold.
Mainly dry, often sunny, but cold with light winds. A frosty start.
Icy patches overnight and on Wednesday morning.