LONDON (Bloomberg) — Bermuda-based Omega Insurance Holdings Ltd., a Lloyd's of London insurer, said it will hold a special general meeting to allow shareholders a vote on a proposal to appoint six new directors to its board.

Invesco Asset Management Ltd., the insurer's biggest shareholder, requested the company hold a vote on the changes last month and also proposed chairman Walter Fiederowicz and senior independent director Christopher Clarke step down.

"The board has been in dialogue with major shareholders of the company in an effort to achieve a consensual outcome and acknowledges the strength of feeling of major shareholders in favor of the Invesco proposals," the company said in a statement on Friday.

Omega raised £130 million from shareholders in 2008, more than half its market value at the time, saying it would use the extra capital to write more catastrophe insurance as prices were rising. The insurer grew premiums by five percent in the first nine months of September 2009 to $247 million, and profits dropped 5.5 percent in the first half of that year, compared with 2008.