The bank sold 2.5 billion pounds of 91-day T-bills at an average yield of 11.561 percent, down from 11.616 percent at last week's auction. It had offered 2 billion pounds.

The bank also sold 2.475 billion pounds of 273-day T-bills, at an average yield of 12.865 percent, up from 12.658 percent at last issue on May 3. It had sought bills worth 3.5 billion pounds.

Copyright Reuters, 2011