Over a year after the end of the Occupy tented protests in the City of London, a new movement has sprung up to challenge the global economic consensus, in this case focusing on what protesters say is the rampant, worldwide problem of corporate tax avoidance.

The campaign, launched on Monday, features a mock corporate video and a set of posters seemingly extolling the virtues of the City as a place to do business. The slogan is: "Visit the City of London – the tax haven capital of the world".

It has been organised by a group called The Rules, a loose global collective with links to Occupy, which aims to stage a number of campaigns based on what it sees as major issues connected to fairness and equality in each country.

The London campaign, in which the group has bought poster space on phone boxes and produced the video above, is aimed at focusing attention on tax avoidance and evasion during the UK's presidency of the G8 group of industrialised nations and ahead of elections later this month in the Corporation of London.

While the Corporation stresses it has no special status related to tax and brings no tax advantages to companies based within its environs, the campaign argues it nonetheless gets special treatment from government – not least because of the square mile's vehement lobbying – and says City-based firms widely use overseas tax havens.

Corporate tax avoidance has become an increasingly controversial issue, in no small part thanks to the efforts of another loosely organised campaign group, UK Uncut, which has highlighted the tax affairs of companies including Vodafone, Goldman Sachs and Starbucks.

Alnoor Ladha, from The Rules, said: "This campaign is about bringing a global voice to the UK tax debate. This affects us all. The City of London is a global hub for the tax haven spider web that extracts wealth from the developing world. We stand in solidarity with the brave citizens of the UK that are fighting the unjust practices of their government.

"To be clear, this not about a couple of bad apples, such as Starbucks or Amazon. It's about the underlying system that allows the few to benefit at the expense of the majority."

The campaign is also intended to promote a more traditional, Occupy-style street event in the City this Saturday, where The Rules will join with activists from Occupy and UK Uncut to – the promise goes – "transform a space in the City of London into a tropical tax haven".