Police and bailiffs have moved in to remove tents from the Occupy London camp at St Paul's Cathedral.
The operation, which began just after midnight, was mostly peaceful but there were 20 arrests.
Occupy London was last week refused permission to appeal against a High Court decision to allow their eviction to proceed.
The City of London Corporation said it "regretted" that it had become necessary to evict the protesters.
Occupy London, which campaigns against corporate greed, set up the camp on 15 October.
Protesters in the square outside the Cathedral stressed their action was far from over, but most did not resist police and bailiffs as they removed tents and other equipment from the site.
bbc.com
