In November 1997 the Environmental Audit Committee of the House of Commons (EAC) was established. The Committee is modelled in some ways on the Public Accounts Committee of the House of Commons (PAC) but, unlike the PAC, the EAC is not supported by an independent auditor. This article argues that, despite the limitations of audit made in accountancy literature, audit can be a useful mechanism by which to hold government to account for the impact of its policies and operations on the environment. However, as a model of accountability, the current system of environmental audit is inadequate. In making this argument, the article draws on two existing audit models. First, because the government has chosen to model the EAC on the PAC, the mechanisms in place for securing financial and value for money accountability in UK central government will be considered. Second, the article looks to the arrangements in Canada, where a more developed system of environmental audit exists.