Severe delays expected as crash leaves M1 completely blocked
![Traffic builds up on the southbound carriageway of the M1 in South Yorkshire this morning. Picture: Highways England.](https://www.yorkshirepost.co.uk/webimg/legacy_ash_94660500.jpg?crop=3:2,smart&width=640&quality=65&enable=upscale)
![Traffic builds up on the southbound carriageway of the M1 in South Yorkshire this morning. Picture: Highways England.](/img/placeholder.png)
An early morning accident has closed all lanes of the M1 this morning.
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Here is what we know so far... please click refresh for the latest updates