REMEMBER that referendum about whether Britain should create a single market with the United States? You know, the one that asked whether corporations should have the power to strike down the UK's laws? No, I don't either.

Mind you, I spent 10 minutes looking for my watch the other day before I realised I was wearing it. Forgetting about the referendum is another sign of ageing.

Because there must have been one, mustn't there? After all that agonising over whether or not Britain should stay in the European Union, the UK's government wouldn't cede the country's sovereignty to some shadowy, undemocratic body without consulting its citizens. Would it?

The purpose of the Transatlantic Trade and Investment Partnership is to remove the regulatory differences between the US and European nations.

The most important issue here is the remarkable ability such a partnership would grant big business to sue the living daylights out of governments which try to defend their citizens.

It would allow a secretive panel of corporate lawyers to overrule the will of parliament and destroy legal protections. Yet the defenders of Britain's sovereignty say nothing.

The mechanism through which this is achieved is known as investor-state dispute settlement.

It's already being used in many parts of the world to kill regulations protecting people and the natural world.

The Australian government, after massive debates in and out of parliament, decided that cigarettes should be sold in plain packets, marked only with shocking health warnings. The decision was validated by the Australian supreme court.

But, using a trade agreement Australia struck with Hong Kong, the tobacco company Philip Morris has asked an offshore tribunal to award it a vast sum in compensation for the loss of what it calls its intellectual property.

During its financial crisis, and in response to public anger over rocketing charges, Argentina imposed a freeze on people's energy and water bills. It was sued by the international utility companies whose vast bills had prompted the government to act.

For this and other such crimes, it has been forced to pay out over a billion dollars in compensation.

In El Salvador, local communities managed at great cost (three campaigners were murdered) to persuade the government to refuse permission for a vast gold mine which threatened to contaminate their water supplies.

A victory for democracy? Not for long, perhaps. The Canadian company which sought to dig the mine is now suing El Salvador for $315m - for the loss of its anticipated future profits.

In Canada, the courts revoked two patents owned by the American drugs firm Eli Lilly, on the grounds that the company had not produced enough evidence that they had the beneficial effects it claimed.

Eli Lilly is now suing the Canadian government for $500m, and demanding that Canada's patent laws are changed.

These companies (along with hundreds of others) are using the investor-state dispute rules embedded in trade treaties signed by the countries they are suing.

The rules are enforced by panels which have none of the safeguards we expect in courts. The hearings are held in secret.

The judges are corporate lawyers, many of whom work for companies of the kind whose cases they hear. Citizens and communities affected by their decisions have no legal standing.

There is no right of appeal on the merits of the case. Yet they can overthrow the sovereignty of parliaments and the rulings of supreme courts.

You don't believe it? Here's what one of the judges on these tribunals says about his work. “When I wake up at night and think about arbitration, it never ceases to amaze me that sovereign states have agreed to investment arbitration at all ... Three private individuals are entrusted with the power to review, without any restriction or appeal procedure, all actions of the government, all decisions of the courts, and all laws and regulations emanating from parliament.”

There are no corresponding rights for citizens. We can't use these tribunals to demand better protections from corporate greed.

As the Democracy Centre says, this is “a privatised justice system for global corporations”.

Even if these suits don't succeed, they can exert a powerful chilling effect on legislation. One Canadian government official, speaking about the rules introduced by the North American Free Trade Agreement, remarked: “I've seen the letters from the New York and DC law firms coming up to the Canadian government on virtually every new environmental regulation and proposition in the last five years.

They involved dry-cleaning chemicals, pharmaceuticals, pesticides, patent law.

Virtually all of the new initiatives were targeted and most of them never saw the light of day.”

Democracy, as a meaningful proposition, is impossible under these circumstances.

This is the system to which Britain will be subject if the transatlantic treaty goes ahead. The US and the European commission, both of which have been captured by the corporations they are supposed to regulate, are pressing for investor-state dispute resolution to be included in the agreement.

The commission justifies this policy by claiming that domestic courts don't offer corporations sufficient protection because they “might be biased or lack independence”.

Which courts is it talking about? Those of the US? Its own member states? It doesn't say. In fact it fails to produce a single concrete example demonstrating the need for a new, extrajudicial system.

It is precisely because the UK's courts are generally not biased or lacking independence that the corporations want to bypass them.

The EC seeks to replace open, accountable, sovereign courts with a closed, corrupt system riddled with conflicts of interest and arbitrary powers.

Investor-state rules could be used to smash any attempt to save the UK's publicly funded healthcare system, the National Health Service (NHS) from corporate control, to re-regulate the banks, to curb the greed of the energy companies, to renationalise the railways, to leave fossil fuels in the ground.

These rules shut down democratic alternatives. They outlaw leftwing politics.

This is why there has been no attempt by the UK government to inform British citizens about this monstrous assault on democracy, let alone consult people.

This is why the Conservatives who huff and puff about sovereignty are silent. Wake up, people you're being shafted.

By arrangement with the Guardian