A serious collision on the M4 in Wiltshire has brought traffic to a standstill, causing extensive queues in both directions. Emergency services are currently on the scene managing the situation, but motorists are being advised to expect significant delays and consider alternative routes where possible. The incident has disrupted normal traffic flow, and recovery efforts are underway to clear the wreckage and reopen lanes as quickly as possible. Stay tuned for live updates as the situation develops.