Three Railtrack executives - Alistair Cook, 52, Sean Fugill, 52, and Keith Lea, 55 - and two executives from Balfour Beatty - AnthonyWalker, 48, and Nicholas Jeffries, 50, have also denied the charges.
Anthony Jenkins, group chief executive of Barclays, and Sir David Walker, chairman of Barclays, appear before the Parliamentary Commission on Banking Standards (at 9.45am).