I'll post the updates here as the other thread is currently broken.

Infernal Petroleum Experiance invade the International Petroleum Exchange

Update: as of 2:30
TRADING HAS STOPPED!
All but two of the people who went inside are out, the remaining two are barracaded inside an office. The poilce have arrived with a battering ram.
A protester has checked into hospital with an eye injury. (When he came out of the building, he was covered in blood.)
One person has been arrested of criminal damage.

Update: as of 3:00
The remaining two in the building have been arrested.
Many of the traders have moved over the road to a pub and are shouting insults and swearing at the protesters outside, some who have a banner and are leafleting.
Computers were switched off, phones disconnected and insults traded!

here's what Reuters said.

15:17 17Mar2003 UPDATE 2-Anti-war protesters raid London oil exchange

(Adds details, exchange still shut)
LONDON, March 17 (Reuters) - Anti-war protesters broke into London's International Petroleum Exchange on Monday and halted business at Europe's largest oil futures trading hub.
Carrying banners such as "Oil fuels war" about 15 people evaded guards at the building in London's financial district, home to multi-billion-dollar trade in Brent crude oil futures.
"There is a lot of hooting and hollering and there have been a couple of altercations," a trader said.
Demonstrators said one or two of their number were taken to hospital after sustaining injuries in fights on the trading floor.
"We want to expose the links between the war economy and the oil economy," said Andy Thomas, a 35-year-old protester. "It is clear the U.S. has a strategic interest in controlling and releasing Iraqi oil reserves."
The exchange remained shut at 1515 GMT. The IPE declined comment except to confirm the closure.
The trading floor was evacuated after the raid, but police arrived soon afterwards carrying chain cutters.
Anti-war groups also staged dramatic "die-ins" elsewhere in Britain on Monday, smearing themselves with fake blood and pretending to be dead at military bases and outside government offices.
((Reporting by Eva Sohlman, Sujata Rao; editing by Duncan Shiels; +44 20 7542 7646))
Monday, 17 March 2003 15:17:20
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15:21 17Mar2003 LONDON OIL TRADERS RETURN TO IPE BUILDING AFTER EVACUATION ON ANTI-WAR PROTEST
15:22 17Mar2003 LONDON ENERGY EXCHANGE TO RESUME TRADING AT 1600 GMT AFTER ANTI-WAR PROTEST-DEALERS
15:31 17Mar2003 London oil futures to resume after anti-war protest

LONDON, March 17 (Reuters) - Oil traders returned to the International Petroleum Exchange on Monday after Europe's top oil futures exchange was evacuated earlier due to an anti-war protest, witnesses said.
Trading was set to resume after more than a two-hour interruption at 1600 GMT, dealers said.
Protesters broke into the building in London's financial district carrying banners such as "Oil fuels war" and fights broke out on the trading pit, home to multi-billion-dollar trade in Brent crude oil futures.
((Tom Ashby, London newsroom +44 20 7542-8185, fax +44 20 7542 4453,  london.energy.desk@reuters.com))
Monday, 17 March 2003 15:21:27
RTRS [nL17361207] {C}
ENDS