Amlin has said full-year pretax profits rose 84% to £342.7m from £186.7m in 2005.
The results beat analysts' expectations of £300.13m according to a forecast supplied by the company.
Gross written premiums rose to £1.113bn while the combined ratio fell to 72% from 82%.
Amlin declared a basic total dividend of 12 pence, up from 2005's 10.2p, but also announced a special dividend of 8 pence and said it would continue to pursue an active capital management policy in future.
Chief executive Charles Phillips told reporters on a conference call that he would look to revisit any further returns to capital after the 2007 hurricane season.
Phillips added that 2007 could be a year of high profitability for the group.
"2007 has every prospect of being an excellent year," he said. "Although it would be hard to get a return on equity of 34% (as Amlin did in 2006) year in, year out, I very much hope we can produce a good return," he said.
However, the company admitted that trading in the airline and commercial insurance lines have "fallen to levels where it was becoming more difficult to achieve a satisfactory return for the risk".
Amlin Bermuda, its newly-formed Bermudan business reported $223m of gross written premiums in its first full year of operation.
Hosted by comedian and actor Tom Allen, 34 Gold, 23 Silver and 22 Bronze awards were handed out across an amazing 34 categories recognising brilliance and innovation right across the breadth of UK general insurance.
