The author gives a strong warning to family offices everywhere if they have a connection with the United Kingdom: Family offices dealing with any connections to the UK must urgently instigate a review of the UK tax implications of non-UK assets and activities to engage with the risks. In turn, professionals providing family office services will need to carefully manage their own professional risks. The new measures (assuming there are no unanticipated amendments) are wide-reaching and the penalties are severe. As described by the author, legislation in the UK Finance Bill 2017 will force full UK tax disclosure with regard to all offshore (ie, non- UK) related matters or relevant ?offshore transfers' assessable to UK tax by 30 September 2018 - or else the parties concerned will face hugely increased penalties up to over double the original amount of omitted tax even in circumstances where there was never any deliberate intent. The author covers the measures in great detail, with very helpful advice in navigating through the complexities. He concludes that there is some ?good