The decision to approve the Silvertown Tunnel under the Thames on Greenwich Peninsula has been delayed by a month.

Transport minister Paul Maynard said the delay was to give extra time for the Planning Inspectorate to consider ways to reduce air pollution by the controversial tunnel proposals.

Proponents of the new tunnel, that would connect the peninsula by The O2 to Silvertown, say it would ease traffic going through the Blackwall Tunnel.

However, campaigners against the tunnel say the plans would generate more traffic and create an even larger air pollution problem in the area.

The transport minister wrote to the House of Commons delaying the plans until November 10 and insists the decision to delay does not give any indications for what the outcome might be.

He said: “This extension is to enable further consideration of the recent responses to the secretary of state consultations on the scheme which relate to the updated UK plan for tackling roadside nitrogen dioxide concentrations published by government on July 26, 2017.”

A spokesperson from No to Silvertown Tunnel said a new tunnel would not help ease congestion as it would only attract more cars to the area.

They said: “We believe planners should continue to invest in crossings for public transport, pedestrians and cyclists; but should also take action to ensure fewer vehicles needlessly enter London in the first place before considering any new road crossings in the capital.”