Some of those who bought into tax avoidance schemes that didn't work are suing the advisers who sold them the schemes. (Not us though! We tended to stay clear of dodgy schemes.)
I guess they claim they didn't know what they were letting themselves in for, but I've got very little sympathy if they thought paying no tax was as simple as that.
Penningtons Manches spearheads multi-million pound claim against tax advisers for film finance scheme investors The Penningtons Manches commercial dispute resolution team is assisting over 70 high profile individuals who invested in controversial film finance schemes to take action against accountants and financial experts. Such schemes - which counted well-known footballers and musicians among their investors - are increasingly subject to challenge by HMRC which is fighting to recoup tax reliefs on them through the courts. If the schemes fail, individuals face not only substantial tax liabilities but also the legal costs in resolving the matter.