Green Party leader Natalie Bennett called for a crackdown on tax-dodging multinational firms today in her new year message.
She said such companies should be forced to stop using tax havens and pay up.
Ms Bennett said laws should be brought in to "separate the high street banks from their gambling 'investment' cousins, install a financial transactions tax, work to promote local banks and credit unions, and insure an effective green investment bank can provide the funds we need for essential work."
Britain's economy needs "strong localised economies," she said, "built around small businesses and co-operatives, with decently paid staff offered jobs on which they can build a life.
"Not giant multinational companies emptying out our high streets, importing low-quality, non-durable goods made in dreadful sweatshops, wasting vast amounts of our limited resources."