Gnome wrote:....and to clarify the legal position, TMA 1970 used to say that the (then) Inland Revenue could make use of any information obtained "by lawful means". However, the "by lawful means" provision was dropped (c2004?) from the legislation.
For the avoidance of doubt, I don't believe individuals (or any other entity) that 'acquire' by illegal means such data, which is then handed over or sold to HMRC, get any sort of immunity from prosecution for their own illegal deeds. This legislation just simply covers the UK tax authorities a$$ when they get tip offs etc, or when they want to actively persue illegaly obtained data, which in my opinion is very wrong/immoral etc.
(This isn't my area of expertise however, just something I have a passing interest in).