Four Occupy activists chained themselves to the pulpit during Evensong at St Paul's Cathedral in London last night.
Cathedral dean David Ison said he was taking the service when "four young women dressed in white" chained themselves to the structure.
The activists staged a "mic check" and chained themselves to the pulpit.
A City of London police spokesman said cathedral staff were happy for the activists to remain and so officers left the building but maintained a presence outside.
Protesters unfurled a large banner reading: "Throw the money changers out of the temple" on the cathedral steps.
Occupy London called the action "dramatic intervention to highlight their call for the leadership of St Paul's Cathedral to stop sitting on the fence and join the fight against rising inequality."
As the Star went to press the four were still in the cathedral and an Occupy spokesman said they were not planning to leave.
Mr Ison said: "It will be a long cold night if they want to stay there. I don't know what they want to do."
The action came as the group marks the anniversary of its now-dismantled protest camp at St Paul's.
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