The equine passport legislation is a comparatively new scheme that requires all horses to have a passport by 28th February 2005 (Defra, 2004). The equine passport is thought to have had a major impact on the industry in the United Kingdom, however the extent of this is, as yet, unknown due to the lack of current research. The UK Government hopes that the passport scheme will monitor horses that have been treated with medication and guarantee that they are not slaughtered for human consumption (Frank, 2003, Defra, 2004). Whilst the scheme originated from European food safety legislation (Ellis, 2003), the UK Government believes that there are other benefits attached to the equine passport, such as gaining comprehensive records about the equine population in the UK, which is crucial information required for epidemiological reasons (Mellor et al., 1999). The information will provide a denominator for the assessment of disease rates, and which areas of the country may be under threat.