Following a revision to the WADA Code and the implementation of its new rules as of 01 January 2009, the BEF have issued a guide to applying for Therapeutic Use Exemption. The guide includes information on who should apply, how to apply and who to apply to, you can download this here:
FEI Veterinary Guidance note 2: Information on changes from Medication Forms to Equine Therapeutic Use Exemptions (Equine TUEs) pdf