A small Challenge

No prizes, but here is a small challenge to get you back in the swing of things. It's stolen from Terry Pratchett, but I'm sure he wouldn't mind. Why don't we try posting the solution as comments, one letter at a time. So once you think you know the decrypt post the first letter of the solution. The next person to get it posts the second letter and so on. HUDYU LYBUW QKWDQ BTUPY BQYSU FIQAQ UFIOB UWDQH JIIIU HTDUJ VEEXM UBFEU FVEFK EHWQX JYMDE CCESD YWDYX JEDUL QXUID UIDEC CESVE XSQUH RJDQH WQBVD YUREJ HQUFF QJQXJ IJDUC UJQJI UAQCO BJDUK GUHVT DQUWQ KWDQB TUPYB QYSUF IQAQU FIDME HYUXJ VETBH EMQDY ULYBO BUWDQ HJIII UHTDU JVEEX MUBFE UFVEF KEHWQ OBDYQ JHUSJ HQFQI UBEFJ YVEUS QVUXJ DEUHQ IJIYJ DUYSI TDQID QYSYW QC