Protesters planning demonstrations in the run up to Christmas could hit small business trade.
Demonstrators are expected to go on a disruptive tour of what they call Brighton's “biggest tax dodgers”.
Click on play below to read our liveblog of the protest, which will start shortly before the midday protest.
Business leaders have warned the action will be a “disaster” for small shopkeepers who are already struggling because of the snow.
Protesters will today meet at the Clock Tower, in Brighton, at 12pm before taking a tour of some of the city centre's biggest stores.
The event has been organised by UK Uncut and protestors are expected to target chains accused of high levels of legal tax avoidance such as Boots, HSBC, Barclays and the city's two Vodafone stores in Churchill Square shopping centre and Western Road in Brighton.
Windows at the Western Road shop were smashed during Tuesday's demonstration against cuts to education.
Campaigners are also planning to target shops in billionaire Philip Green's Arcadia group including Topshop, Miss Selfridge and Dorothy Perkins.
The protesters do not claim that any of the companies are acting unlawfully but are campaigning against businesses who use off-shore registrations or other means to pay less tax.
Today's protest is the latest in a run of demos expected to be held in the city over the coming weeks.