Green Lane in Hatton has been closed in both directions following an emergency services incident at a business on Communication Park, Steyning Way, Hounslow.
Police and emergency services responded just after 5-m on Wednesday 5th March after a suspicious package was reported. Officers from the Metropolitan Police are currently at the scene, and the situation is being assessed.
Bus Route 423 is affected due to the road closure at the junction with Green Lane.
Authorities have yet to confirm whether the device is viable or if there is a wider risk to the public. Residents and commuters are advised to avoid the area while investigations continue.
More updates will follow as further details emerge. Anyone with information is urged to contact police on 101 or 999 in an emergency.