Chaucer Holdings, the London-listed insurance group, has announced a rise in pre-tax losses for the six months to June to £6.1m, from £2.4m during the same period last year.
The loss per share widened to 9.5p, from 5.3p, and no dividend was declared.
Gross premiums written rose to £91.5m from £55.4m.
Chaucer said the losses owed more to prior year deterioration than the current business environment.
The group said the benefits of the hardening in underwriting conditions had yet to be reflected in its results. It added that the costs of the terrorist attacks in the US would now "obscure any improvement in underlying profitability that may have been hoped for in the second half of the year".
At this stage, Chaucer expects its losses from the attacks on the US to be between £8m and £12m, or between 7p and 10p per share. It said the estimate could change as more information became available.
