Allcock was jailed for five years at the Old Bailey last month for taking bribes. The former inspector was convicted of six charges of corruption - but cleared of five others. The case has shaken the Revenue to its 300- year-old foundations.
The survey of 200 finance directors, conducted by Accountancy Age magazine and Reed Accountancy Personnel, found a quarter also believed Allcock was "unlikely to be an isolated incident". One said: "It has shattered my respect for their integrity."Reuse content