Adding a runway to an existing airport is relatively low risk and comparatively cheaper than building a new major airport altogether. Anyone considering the lat

Adding a runway to an existing airport is relatively low risk and comparatively cheaper than building a new major airport altogether. Anyone considering the latter will surely look at the Berlin Brandenburg Airport [0], which ran roughly €4 billion over budget and opened nine years behind schedule. Given the dire financial situation of the United Kingdom right now, I would wager this is an incredibly hard sell. [0] https://en.wikipedia.org/wiki/Berlin_Brandenburg_Airport https://en.wikipedia.org/wiki/Berlin_Brandenburg_Airport