HMRC have published the latest issue of their Working Together publication for tax agents and advisers. The latest issue (issue 41) is available on the HMRC website.
http://www.hmrc.gov.uk/agents/working-together-41.pdfWorking Together is a partnership between HMRC and various professional bodies which aims to identify and implement improvements to HMRC practices and procedures for the benefits of agents, their advisers and their clients.