Gazzy - they are letters purporting to be from HMRC indicating the payment of EBT's to Tore Andre Flo, Ronald De-Boer and Craig Moore (If they actually paid him an EBT they deserve everything they get) and the deliberate withholding of such information.
Having spent 30+ years in various Government Departments, the language, tone and construction of such a highly sensitive (and unsigned) letter makes it dubious at best.
Perhaps I'm wrong, but I think there's a bit of 'skullduggery' at play.