Just when you thought the expansion couldn't get any worse; yesterday's Westminster Hall debate revealed that the third runway could see up to 4,000 houses destroyed, with 10,000 people forced out of their homes.

John McDonnell, MP for Hayes and Harlington, made clear that this was not going to be the last we hear of Heathrow in Parliament: "We shall apply regularly for debates on different aspects of the matter, so I warn the Minister not to plan any lengthy holidays next year, and certainly not to plan any via Heathrow".

In an earlier article, I talked about 'predict and provide', a pro-growth transport policy model which has lead to self-fulfilling and exponential growth in surface transport. In this article I'll be looking at the Government's argument that Heathrow must be expanded to meet the growing demand for air travel, and consider if this is a predict and provide approach.

Let's quickly recap on predict and provide. Officials make a prediction based on current growth rates, and extrapolate future data. It is presumed that this demand cannot be checked (because demand is caused by forces over which the Government has no control) and therefore the space for the demand to grow into is provided.