A new report by a UK Parliamentary Committee has called for HM Treasury to   devise a new code of practice for tax advisors, which would determine whether   the firms they work for should be given contracts with government, and deal   with potential conflicts of interest between the firms’ role advising government   on legislation and their giving of advice to private clients. . .

http://www.tax-news.com/news/UK_Parliamentary_Committee_Harries_Big_Four____60595.html