BREAKING - UPDATE: Female passenger killed in M40 horror crash

A serious crash caused long delays on the M40 after a car overturned.

All lanes of the northbound carriageway between junction 4 (Handy Cross) and junction 5 (Stokenchurch) were closed from midnight.

The authorities have not yet confirmed how many vehicles were involved or if there are any people seriously hurt.

However, warnings were in place that the motorway could be closed for lengthy periods - only reopening in the early hours of the morning.

More information as we get it.