Gatwick Expansion - explainer on Transport Secretary's decision on Northern Runway plans

After days of speculation the £2.2bn Northern Runway project was going to given the go ahead, Transport Secretary Heidi Alexander delayed the decision but said she is ‘minded to approve’ the plans, providing measures to reduce noise are put in place.
The transport secretary's support does not guarantee the expansion will go ahead as it would still need planning permission. Here Mark Dunford explains what the decision means and when the next stage of the consultation will be.