Lloyd's members have attacked corporate capital providers, claiming they fare worse and should be required to put up more capital.
The Association of Lloyd's Members predict for the period 1994-2004 that Names will profit by 24%, while corporates will make losses of 23%.
The association used 1999 figures for all corporate as an example. Despite its boasts, however, the figures, when broken down, show it is actually the UK-quoted corporates that fared best (-12.4%), followed by Names (-14.4%).
US and Bermudian corporates (-25.6%) and international corporates (-46.9%) suffered the heaviest losses.
Association chairman Michael Deeny said: "Capital requirements for international corporates should be looked at. Certain categories of capital provider are more risky, therefore they should provide more capital."
A Lloyd's spokesman said: "If it was not for the corporates there would probably not be a Lloyd's today - they make up 80% of the market."
Responding to claims that corporates should provide more capital due to their liability being limited, the spokesman said: "We already take that into account when making our calculations."
He added that Lloyd's was currently reviewing the risk-based capital system and the Central Fund arrangements for post-2003.
The Names association also urged the Jaffray Names to drop their case this week: "We have never believed Lloyd's created a conspiracy and we support the Lloyd's view."