Yet again, the UK government has sided with the robotraders on a Robin Hood Tax

A financial transactions tax is the most economically efficient way to lessen the harm of HFT – but the government keeps fighting it.

Fifteen years ago the computer program Deep Blue made headlines around the world by beating chess giant Garry Kasparov. In the years since, computer algorithms have quietly gone on to dominate large parts of the financial markets.

Computer-driven trading now accounts for 70 per cent of trading in the US equity market, 36 per cent in the UK. Machines fire tens of thousands of trades a second, relying on state-of-the art technology and proximity to stock exchanges to shave microseconds off transaction times.

Yet tiny errors in the algorithms can have devastating consequences. During the infamous 'Flash Crash' of 2010 the Dow Jones index dropped nine per cent in a matter of minutes. Over the summer Knight Capital – a leading New York HFT (high frequency trading) firm – erroneously swamped the stock market with errant trades, wiping $440m from the firm's value.

That's why the European Parliament's powerful Economic Affairs Committee this week voted through legislation – the Markets in Financial Instruments Directive II – designed to curb HFT. A key proposal being that trades will have to be posted for at least 500 milliseconds (currently traders can execute 10,000 trades during the same period).

Proponents of HFT argue their churning sea of trades brings liquidity to the markets. The reality is more capricious - in times of crisis traders pull the plug, draining liquidity when it is needed most.

Adair Turner described such corners of financial markets as "socially useless". The Financial Times recently said “hard evidence and common sense point to a host of social benefits from removing unnecessary intermediation and curbing predatory trading strategies”, adding that in some areas Mifid II was simply too mild.

It's no surprise that high frequency traders themselves have mounted a defence against the reforms. What's of more concern is that in the days preceding the vote the UK Government lobbied for them to be watered-down. Its official response did not support the call for HFT firms to hold equities for a minimum period.

Yet as the Bureau for Investigative Journalism revealed last week, of a 31-member panel tasked by the UK Government to assess Mifid II, 22 members were from the financial services, 16 linked to the HFT industry. A study by the Bureau last year revealed that over half the funding for the Conservative Party came from the financial sector, 27 per cent coming from hedge funds, financiers and private equity firms. This perhaps helps explain how the interests of a select group of traders get confused with the interests of the economy as a whole.

It's a similar story for the Financial Transaction Tax. No longer a pipe dream, European Governments of all political hues, including its largest economies, are working towards its implementation by next year. The tax of between 0.1 - 0.01 per cent on financial transactions offers a more effective mechanism to limit market excesses by making certain speculative trades less profitable. But crucially, it is also capable of raising billions in much needed revenue that would ensure the financial sector pays it fair share for the damage caused to our economy.

Yet the UK Government has again chosen to stand apart in blocking a Europe wide-FTT, turning down billions in desperately needed revenue that could help save jobs, protect the poorest and avoid the worst in cuts to public services. Instead, advice of previous Party Treasurers Michael Spencer and Peter Cruddas was heeded, who infamously lobbied against the FTT. Both incidentally own multi-million pound financial firms which would be hit by such a tax.

Taken together, this tells the story of a post-financial crisis Europe: as governments embark on the arduous task of making markets once again work in the interests of society, the UK Government remains intoxicated by the Square Mile - protecting vested interests and relying on the same market principles that got us into this mess to get us out again. Best brace ourselves for a bumpy ride.

The EU Parliament. Photograph: Getty Images

Simon Chouffot is a spokesperson for the Robin Hood Tax campaign and writes on the role of the financial sector in our society.

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The deafening killer - why noise will be the next great pollution scandal

A growing body of evidence shows that noise can have serious health impacts too. 

Our cities are being poisoned by a toxin that surrounds us day and night. It eats away at our brains, hurts our hearts, clutches at our sleep, and gnaws at the quality of our daily lives.

Hardly a silent killer, it gets short shrift compared to the well-publicised terrors of air pollution and sugars food. It is the dull, thumping, stultifying drum-beat of perpetual noise.

The score that accompanies city life is brutal and constant. It disrupts the everyday: The coffee break ruined by the screech of a line of double decker buses braking at the lights. The lawyer’s conference call broken by drilling as she makes her way to the office. The writer’s struggle to find a quiet corner to pen his latest article.

For city-dwellers, it’s all-consuming and impossible to avoid. Construction, traffic, the whirring of machinery, the neighbour’s stereo. Even at home, the beeps and buzzes made by washing machines, fridges, and phones all serve to distract and unsettle.

But the never-ending noisiness of city life is far more than a problem of aesthetics. A growing body of evidence shows that noise can have serious health impacts too. Recent studies have linked noise pollution to hearing loss, sleep deprivation, hypertension, heart disease, brain development, and even increased risk of dementia.

One research team compared families living on different stories of the same building in Manhattan to isolate the impact of noise on health and education. They found children in lower, noisier floors were worse at reading than their higher-up peers, an effect that was most pronounced for children who had lived in the building for longest.

Those studies have been replicated for the impact of aircraft noise with similar results. Not only does noise cause higher blood pressure and worsens quality of sleep, it also stymies pupils trying to concentrate in class.

As with many forms of pollution, the poorest are typically the hardest hit. The worst-off in any city often live by busy roads in poorly-insulated houses or flats, cheek by jowl with packed-in neighbours.

The US Department of Transport recently mapped road and aircraft noise across the United States. Predictably, the loudest areas overlapped with some of the country’s most deprived. Those included the south side of Atlanta and the lowest-income areas of LA and Seattle.

Yet as noise pollution grows in line with road and air traffic and rising urban density, public policy has turned a blind eye.

Council noise response services, formally a 24-hour defence against neighbourly disputes, have fallen victim to local government cuts. Decisions on airport expansion and road development pay scant regard to their audible impact. Political platforms remain silent on the loudest poison.

This is odd at a time when we have never had more tools at our disposal to deal with the issue. Electric Vehicles are practically noise-less, yet noise rarely features in the arguments for their adoption. Just replacing today’s bus fleet would transform city centres; doing the same for taxis and trucks would amount to a revolution.

Vehicles are just the start. Millions were spent on a programme of “Warm Homes”; what about “Quiet Homes”? How did we value the noise impact in the decision to build a third runway at Heathrow, and how do we compensate people now that it’s going ahead?

Construction is a major driver of decibels. Should builders compensate “noise victims” for over-drilling? Or could regulation push equipment manufacturers to find new ways to dampen the sound of their kit?

Of course, none of this addresses the noise pollution we impose on ourselves. The bars and clubs we choose to visit or the music we stick in our ears. Whether pumping dance tracks in spin classes or indie rock in trendy coffee shops, people’s desire to compensate for bad noise out there by playing louder noise in here is hard to control for.

The Clean Air Act of 1956 heralded a new era of city life, one where smog and grime gave way to clear skies and clearer lungs. That fight still goes on today.

But some day, we will turn our attention to our clogged-up airwaves. The decibels will fall. #Twitter will give way to twitter. And every now and again, as we step from our homes into city life, we may just hear the sweetest sound of all. Silence.

Adam Swersky is a councillor in Harrow and is cabinet member for finance. He writes in a personal capacity.