The road is said to be closed between junction 19 (Boreham) and junction 20A (Hatfield Peveral). Delays are building in both directions. A12 BOTH DIRECTIONS- CLOSED between J19 (Boreham) and J20A (Hatfield Peveral) due to a collision. Northbound queues back to J18 SandonLondonbound queues back to J21 pic.twitter.com/h0DSUGkMcZ — Essex Travel News (@Essex_Travel) September 22, 2025Colchester bound queues are back to junction 18 (Sandon) and London bound queues are back to junction 21. It appears traffic has come to a standstill on the dual carriageway now due to the closure.