Atrium Underwriting has acquired £25m of capacity on its two managed syndicates, 570 and 609, in the first two capacity auctions of the 2004 Lloyd's auction season, at a cost of £2.8m.

Following these acquisitions, Atrium now owns £83m of its managed capacity and its participation on its managed syndicates for 2005 is 23% for Syndicate 570 and 25% for Syndicate 609, up from 17% and 16% respectively in 2004.