The tunnel - which runs underneath the River Thames - links the London Borough of Tower Hamlets with the Royal Borough of Greenwich. But due to a broken down vehicle, the tunnel was closed earlier this morning.

       According to Good Morning Britain, the closure sparked up to six miles of traffic.

       The traffic site, Jambuster, said the tunnel has since reopened but traffic remains slow.

       They tweeted: "Blackwall Tunnel (Northbound Bore) (Northbound) - Road reopened following an earlier broken down vehicle.

       "Traffic remains slow northbound on the Blackwall Tunnel Approach with tailbacks beyond the Wool."

       The University of Greenwich Buses tweeted: "Hi All, the service 0830 Greenwich to A/Hill via Eltham Stn Stop D is operating approx. 10-15mins behind schedule due to earlier issues with Blackwall Tunnel being closed. Sorry for the delays."

       The Kings Ferry Commuter wrote: "Because of the Heavy traffic trying to get into Blackwall Tunnel.

       "All services are allowed to divert and use Dartford Tunnel and A13."

       More to follow...