The M23 northbound was closed to allow emergency service staff to work safely,” said a spokesperson for the West Sussex Fire & Rescue Service.
National Highways and the AA reported that the road fully reopened around 12:00 p. m.
, though minor residual congestion remained on approach.
Sussex Police have launched an appeal for witnesses and dashcam footage, specifically targeting anyone who observed the grey Mercedes SUV traveling from Brighton prior to the incident.
“Police are appealing for witnesses after a collision on the A23 at Pease Pottage involving a private ambulance and Mercedes SUV on Saturday morning, June 27.
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The collision happened just after 7.30am, leading to the closure of the A23 northbound carriageway but this was partially opened three hours later.
The ambulance had rolled on to its roof and the car caught fire but no one was seriously injured.
There was not a patient in the ambulance at the time.
Anyone who witnessed a grey Mercedes SUV being driven from Brighton ahead of the collision is asked to contact police,” stated Sussex Police.
In a separate, unrelated incident reported by Sussex Police on the same day, a 17-year-old boy from Eastbourne died and three men were seriously injured in a two-car collision on Beachy Head Road on Friday evening, June 26, 2026.
“Police are appealing for witnesses after a teenage boy sadly died in a collision at Beachy Head on Friday evening (26 June).
