Teams of top bankers and insurance and recruitment experts are taking over seven charity shops in east London for a day to see who can make the most cash.

The professionals are competing to see which team increases the percentage turnover the most from each shop.

Barclay’s corporate secretariat in Canary Wharf is putting up three teams on June 29 to run the trust’s shops at Bow, Poplar and Leytonstone.

Zurich Insurance in the City takes over the shops in Shadwell and Canning Town the same day, while Futureboard recruitment consultants is running two shops at Whitechapel and Bethnal Green.

The charity shops can average up to �4,000 on the annual challenges. The teams have to raise the percentage compared to the same day last year.

But they can add their own fundraising, like USB Swiss bank in Bishopsgate did two years ago when it held an auction on the trading floor and added the proceeds to its challenge.

The trust earned a record �1 million from its seven shops in the 12 months to March 31, to help run its day-centre for the homeless and unemployed in Shoreditch.