The third runway is lazy thinking by those who should know better

Never mind Heathrow expansion - we don't use our existing capacity sufficiently well.

Leaders of both members of the coalition were unambiguous before the election, flatly ruling out any prospect of a U-turn on the third runway. To break that promise now would be a betrayal too far, and I don’t believe many of the two million or so voters living beneath the flightpath would forgive either party. So far, the government position hasn't actually shifted.

This matters for a number of reasons. First, political promises need to mean something. As William Hague has said, there’s no justification in U-turns unless the facts change significantly. The facts around aviation haven’t changed. If we perform a U-turn, my colleagues - particularly those who are now calling for a U-turn – will struggle at the next election to persuade anyone who’ll listen to them that their manifesto is worth the paper it’s written on. If politicians drop their pledges, then why believe anything they promise?

It also matters because a decision to expand Heathrow would be the wrong decision, on every level, and before casually subjecting some two million people to an aerial bombardment, those clamouring for a third runway would do well to look at the facts.

Despite the scaremongering, it’s worth remembering that Heathrow already has more flights to business destinations than any other airport in Europe: more than the combined total of Charles de Gaulle and Frankfurt. London airports as a whole have the highest number of flights to key markets in Asia, the Middle East, North American and Australasia. More passengers fly in and out of London than any other city in the world. Paris, our nearest competitor, is in fifth place.

We are well-connected, we have ample capacity, and we are starting from a position of strength. The problem is that we don’t use that capacity well. If we want to preserve Heathrow’s hub status, we need to stop clogging it up with point to point flights to places like Cyprus and Greece, which between them account for 87 weekly flights, and which contribute nothing to overall connectivity.

We also need to take measures to prevent operators guarding their slots by flying half-empty planes. Heathrow has terminal capacity for an extra 20 million passengers, and with fuller and, in places, bigger planes, we’d be able to accommodate many more passengers. The government attempted to bring in a "flight tax", which would wholly or partially have replaced Air Passenger Duty. It faced legal obstacles, but with fresh thinking it could, I’m sure, identify alternatives. Some have suggested a "slot tax", for instance.

In addition, we need to encourage a shift from air to rail wherever possible. Every week, there are 78 flights to Brussels, 94 to Manchester, 37 to Newcastle, and 95 to Paris. All of these, and many others, can be reached easily by train. With a better high speed rail network, they will be easier still.

But most importantly, we need to relieve pressure on Heathrow by improving links to other airports. For example, Stansted is massively underused, currently by about 50 per cent, and with proper rail links to the City, it would be the natural place for business flights. There is no reason why we couldn’t facilitate a two-hub approach, with Heathrow catering (broadly speaking) for western-facing flights, and Stansted catering for eastern business flights. The point to point flights that merely clog up Heathrow could be taken care of elsewhere.

Those demanding a third runway are yet to explain why we must have a single mega hub. They have not explained how London is supposed to deal with 25 million extra road passenger journeys each year to and from Heathrow. They haven’t acknowledged the masses of spare capacity that exists in London, which is already serviced by more runways than any other European city bar Paris, which has one more. These and countless other questions are simply left unanswered.

Simply calling on government to double the size of Heathrow is lazy half-thinking by people who ought to know better, but who have been captured by vested interest and are allowing them to do their thinking for them.

Zac Goldsmith is the Conservative MP for Richmond Park and North Kingston

A plane in the Heathrow flight path over West London. Photograph: Getty Images

Zac Goldsmith is the Conservative MP for Richmond Park and North Kingston.

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This Ada Lovelace Day, let’s celebrate women in tech while confronting its sexist culture

In an industry where men hold most of the jobs and write most of the code, celebrating women's contributions on one day a year isn't enough. 

Ada Lovelace wrote the world’s first computer program. In the 1840s Charles Babbage, now known as the “father of the computer”, designed (though never built) the “Analytical Engine”, a machine which could accurately and reproducibly calculate the answers to maths problems. While translating an article by an Italian mathematician about the machine, Lovelace included a written algorithm for which would allow the engine to calculate a sequence of Bernoulli numbers.

Around 170 years later, Whitney Wolfe, one of the founders of dating app Tinder, was allegedly forced to resign from the company. According to a lawsuit she later filed against the app and its parent company, she had her co-founder title removed because, the male founders argued, it would look “slutty”, and because “Facebook and Snapchat don’t have girl founders. It just makes it look like Tinder was some accident". (They settled out of court.)

Today, 13 October, is Ada Lovelace day – an international celebration of inspirational women in science, technology, engineering and mathematics (STEM). It’s lucky we have this day of remembrance, because, as Wolfe’s story demonstrates, we also spend a lot of time forgetting and sidelining women in tech. In the wash of pale male founders of the tech giants that rule the industry,we don't often think about the women that shaped its foundations: Judith Estrin, one of the designers of TCP/IP, for example, or Radia Perlman, inventor of the spanning-tree protocol. Both inventions sound complicated, and they are – they’re some of the vital building blocks that allow the internet to function. 

And yet David Streitfield, a Pulitzer-prize winning journalist, someow felt it accurate to write in 2012: “Men invented the internet. And not just any men. Men with pocket protectors. Men who idolised Mr Spock and cried when Steve Jobs died.”

Perhaps we forget about tech's founding women because the needle has swung so far into the other direction. A huge proportion – perhaps even 90 per cent - of the world’s code is written by men. At Google, women fill 17 per cent of technical roles. At Facebook, 15 per cent. Over 90 per cent of the code respositories on Github, an online service used throughout the industry, are owned by men. Yet it's also hard to believe that this erasure of women's role in tech is completely accidental. As Elissa Shevinsky writes in the introduction to a collection of essays on gender in tech, Lean Out: “This myth of the nerdy male founder has been perpetuated by men who found this story favourable."

Does it matter? It’s hard to believe that it doesn’t. Our society is increasingly defined and delineated by code and the things it builds. Small slip-ups, like the lack of a period tracker on the original Apple Watch, or fitness trackers too big for some women’s wrists, gesture to the fact that these technologies are built by male-dominated teams, for a male audience.

In Lean Out, one essay written by a Twitter-based “start-up dinosaur” (don’t ask) explains how dangerous it is to allow one small segment of society to built the future for the rest of us:

If you let someone else build tomorrow, tomorrow will belong to someone else. They will build a better tomorrow for everyone like them… For tomorrow to be for everyone, everyone needs to be the one [sic] that build it.

So where did all the women go? How did we get from a rash of female inventors to a situation where the major female presence at an Apple iPhone launch is a model’s face projected onto a screen and photoshopped into a smile by a male demonstrator? 

Photo: Apple.

The toxic culture of many tech workplaces could be a cause or an effect of the lack of women in the industry, but it certainly can’t make make it easy to stay. Behaviours range from the ignorant - Martha Lane-Fox, founder of, often asked “what happens if you get pregnant?” at investors' meetings - to the much more sinister. An essay in Lean Out by Katy Levinson details her experiences of sexual harassment while working in tech: 

I have had interviewers attempt to solicit sexual favors from me mid-interview and discuss in significant detail precisely what they would like to do. All of these things have happened either in Silicon Valley working in tech, in an educational institution to get me there, or in a technical internship.

Others featured in the book joined in with the low-level sexism and racism  of their male colleagues in order to "fit in" and deflect negative attention. Erica Joy writes that while working in IT at the University of Alaska as the only woman (and only black person) on her team, she laughed at colleagues' "terribly racist and sexist jokes" and "co-opted their negative attitudes”. 

The casual culture and allegedly meritocratic hierarchies of tech companies may actually be encouraging this discriminatory atmosphere. HR and the strict reporting procedures of large corporates at least give those suffering from discrimination a place to go. A casual office environment can discourage reporting or calling out prejudiced humour or remarks. Brook Shelley, a woman who transitioned while working in tech, notes: "No one wants to be the office mother". So instead, you join in and hope for the best. 

And, of course, there's no reason why people working in tech would have fewer issues with discrimination than those in other industries. A childhood spent as a "nerd" can also spawn its own brand of misogyny - Katherine Cross writes in Lean Out that “to many of these men [working in these fields] is all too easy to subconciously confound women who say ‘this is sexist’ with the young girls who said… ‘You’re gross and a creep and I’ll never date you'". During GamerGate, Anita Sarkeesian was often called a "prom queen" by trolls. 

When I spoke to Alexa Clay, entrepreneur and co-author of the Misfit Economy, she confirmed that there's a strange, low-lurking sexism in the start-up economy: “They have all very open and free, but underneath it there's still something really patriarchal.” Start-ups, after all, are a culture which celebrates risk-taking, something which women are societally discouraged from doing. As Clay says, 

“Men are allowed to fail in tech. You have these young guys who these old guys adopt and mentor. If his app doesn’t work, the mentor just shrugs it off. I would not be able ot get away with that, and I think women and minorities aren't allowed to take the same amount of risks, particularly in these communities. If you fail, no one's saying that's fine.

The conclusion of Lean Out, and of women in tech I have spoken to, isn’t that more women, over time, will enter these industries and seamlessly integrate – it’s that tech culture needs to change, or its lack of diversity will become even more severe. Shevinsky writes:

The reason why we don't have more women in tech is not because of a lack of STEM education. It's because too many high profile and influential individuals and subcultures within the tech industry have ignored or outright mistreated women applicants and employees. To be succinct—the problem isn't women, it's tech culture.

Software engineer Kate Heddleston has a wonderful and chilling metaphor about the way we treat women in STEM. Women are, she writes, the “canary in the coal mine”. If one dies, surely you should take that as a sign that the mine is uninhabitable – that there’s something toxic in the air. “Instead, the industry is looking at the canary, wondering why it can’t breathe, saying ‘Lean in, canary, lean in!’. When one canary dies they get a new one because getting more canaries is how you fix the lack of canaries, right? Except the problem is that there isn't enough oxygen in the coal mine, not that there are too few canaries.” We need more women in STEM, and, I’d argue, in tech in particular, but we need to make sure the air is breatheable first. 

Barbara Speed is a technology and digital culture writer at the New Statesman and a staff writer at CityMetric.