Chaucer Holdings has announced a £40m increase in capacity for next year.
The company submitted its 2007 business forecasts to Lloyd's today, which include plans to increase capacity on two syndicates.
Chaucer Syndicate 1084 is to set to increase its capacity by £35m to £485m, while the Nuclear Syndicate 1176 will raise its capacity by £5.1m to £27.5m.
The company said: "These are very early plans and are dependent on market conditions nearer the time and on Lloyd's consent."