The 10 per cent depreciation regulation was introduced to the UK (and the entire EU community) on 3rd January 2018, and was primarily intended for the purpose of introducing retail investor protection and to standardise practices across the EU.
Read the full story:
https://www.ftadviser.com/investments/2020/03/23/how-to-deal-with-virus-triggered-mifid-ii-10-depreciation-reporting/
