The A34 is closed northbound near Bullington Cross due to an accident involving five vehicles on the A303. Police are advising drivers to find alternative routes.
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The father of the Duchess of Sussex also said he spoke with Harry about Brexit and Donald Trump.
Hundreds of services have been cancelled or significantly delayed since schedules were changed on May 20.
The Duchess of Sussex’s father said he "absolutely wanted" to walk his daughter down the aisle but he needed to undergo a heart operation.