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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Theresa May can play big fish with devolved nations - in the EU she's already a nobody

The PM may have more time for domestic meetings in future. 

Theresa May is sitting down with representatives from Scotland, Northern Ireland and Wales on Monday to hear their concerns about Brexit. 

For the devolved nations, it is the first chance since the seismic vote in June to sit down at a table and talk to the Prime Minister together. 

May has reportedly offered them a "direct line" to Brexit secretary David Davis. It must be a nice change for her to be the big fish in the small pond, rather than the small fish in the big pond that everyone's already sick of. 

Because, when it comes to the EU, the roles of Westminster and other nations is reversed. 

Brexit was small potatoes on the menu of Theresa May’s first European Council summit. It may hurt British pride but the other 27 heads of state and government had far more pressing issues on their plate to worry about.

So, it was an awkward debut Council evening meal of lamb and figs for Prime Minister Theresa May and dinner was served with a large reality check.

As May was later asked at her press conference, why would anyone listen to someone who already has one foot out the door?

Britain is in limbo until it triggers article 50, the legal process taking it out of the EU. Until that happens, it will be largely and politiely ignored.

May’s moment to shine didn’t come until 1am. She spoke on Brexit for “five minutes maximum” and said “nothing revolutionary”, EU sources briefed later.

May basically did that break-up talk. The one where someone says they are leaving but “we can still be friends”. The one where you get a divorce but refuse to leave the house. 

It was greeted in the way such moments often are – with stony silence. Brexit won’t be seriously discussed until article 50 is triggered, and then the negotiations will be overseen by the European Commission, not the member states.

As became rapidly clear after the vote to leave and in sharp contrast to the UK government, the EU-27 was coordinated and prepared in its response to Brexit. That unity, as yet, shows no sign of cracking.

German Chancellor Angela Merkel later damned May with faint praise. She hadn’t said anything new but it was nice to hear it in person, she told reporters.

Merkel, as she often does, had a successful summit. She needed Council conclusions on migration that would reassure her skittish voters that the doors to Germany are no longer thrown wide open to migrants. Germany is one of the member states to have temporarily reintroduced border checks in the passport-free Schengen zone

The conclusions said that part of returning to Schengen as normal was “adjusting the temporary border controls to reflect the current needs”.

This code allows Merkel and her Danish allies to claim victory back home, while allowing Slovakia, which holds the rotating Presidency of the EU, enough of an excuse to insist it has not overseen the effective end of Schengen.

But Merkel’s migration worries did not provide hope for the British push for immigration controls with access to the single market. The Chancellor, and EU chiefs, have consistently said single market access is conditional on the free movement of people. So far this is a red line.

Everyone had discussed the EU’s latest responses to the migration crisis at a summit in Bratislava. Everyone apart from May. She was not invited to the post-Brexit meeting of the EU-27.

She tried to set down a marker, telling her counterparts that the UK wouldn’t just rubberstamp everything the EU-27 cooked up.

This was greeted with a polite, friendly silence. The EU-27 will continue to meet without Britain.

Francois Hollande told reporters that if May wanted a hard Brexit, she should expect hard negotiations.

Just the day before Alain Juppe, his likely rival in next year’s presidential election, had called for the UK border to be moved from Calais to Kent.

Hollande had to respond in kind and the Brussels summit gave him the handy platform to do so. But once inside the inner sanctum of the Justus Lipsius building, it was Syria he cared about. He’s enjoyed far more foreign than domestic policy success.

May had called for a “unified European response” to the Russian bombing of Aleppo. It was a break in style from David Cameron, who is not fondly remembered in Brussels for his habit of boasting to the news cameras he was ready to fight all night for Britain and striding purposefully into the European Council. 

Once safely behind closed doors, he would be far more conciliatory, before later claiming another triumph over the Eurocrats at a pumped-up press conference.

May could point to Council conclusions saying that all measures, including sanctions, were on the table if the Russian outrages continue. But her victory over countries such as Italy and Greece was only achieved thanks to support from France and Germany. 

The national success was also somewhat undermined by the news Russian warships were in the Channel, and that the Brexit talks might be in French.

But even warships couldn’t stop the British being upstaged by the Belgian French-speaking region of Wallonia. Its parliament had wielded an effective veto on Ceta, the EU-Canada trade deal.

Everyone had skin in this game. All the leaders, including May, had backed CETA, arguing the removal of almost all custom duties would boost trade the economy. Belgium’s Prime Minister Charles Michel was forced to tell exasperated leaders he could not force one of Belgium’s seven parliaments to back CETA, or stop it wrecking seven years of painstaking work.

As the news broke that Canada’s trade minister Chrystia Freeland had burst into tears as she declared the deal dead, everyone – not the first time during the summit – completely forgot about Britain and its referendum.

Even as the British PM may be enjoying a power trip in her own domestic union of nations, on the international stage, she is increasingly becoming irrelevant. 

James Crisp is the news editor at EurActiv, an online EU news service.