New client comes to see us and reveals a source of income which he has never told his existing accountant before and never reported to HMRC. This goes back at least 20 years.
We advise him to make full disclosure to HMRC which he agrees to do. This is now in progress. Do we need to report, given that he is 'owing up' anyway?
Also a similar scenario but the client decides not to appoint us so we don't know whether any disclosure was made. This one is surely reportable?