The EU Referendum result – a vote by the UK to leave – and the subsequent resignation of the Prime Minister is likely to at least delay a decision on aviation capacity expansion, and possibly rule it out altogether.
The decision on where the UK would build another runway was on hold until after the national vote. With the national outcome going against membership, the expected decision before the summer parliamentary recess begins on July 21 is likely to be delayed at least. Depending on who the next Prime Minister is, it could be ruled out altogether.
The national vote went against general sentiment in West London. Most boroughs voted remain. Only Hillingdon and Slough voted to leave. The consequences of the vote are unknown, but certainly there are unlikely to be any big decisions – like approving a new runway at Heathrow – until the leadership question is settled.