One British soldier was killed by a roadside bomb in Basra, southern Iraq, today and four others were injured, a spokesman for the Ministry of Defence said in London.
Since the conflict started in 2003, 98 British soldiers have died in Iraq.
The Ministry of Defence spokesman said they were investigating the circumstances of the attack and could not give any further details until the next of kin had been informed.
Britain has more than 8,000 troops in southern Iraq and has been the main ally of the United States in the war.
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Basra has enjoyed relative calm compared to central Iraq where insurgents are waging a campaign of suicide bombings and shootings, but it has seen an increase in violence in the last few months.