An overwhelming majority backed Standard Life's float plans

The group has vowed to press ahead with its flotation in July, despite the recent sell-off on global markets.

However, reports have suggested that the group could decide to lower its price range from the 240p to 290p suggested in April by as much as 10%.

A decision by Credit Suisse to ditch a listing of its insurance arm added to concerns about Standard Life's plan.

On Wednesday the investment bank announced it would be selling Winterthur for 7.9bn euros (�5.4bn; $9.9bn) to European insurer Axa rather than go ahead with the long-planned listing.

Float goes on

But Standard Life has dismissed talk that the turbulent financial markets will derail its plans - since the group outlined its float plans in mid April, the FTSE 100 index has fallen by more than 6%.

Instead it will publish its prospectus and the price range for the initial public offering - expected to be the biggest in the UK since 2001 - later on Thursday.

Last month, an overwhelming majority of the group's members backed its demutualisation plans.