There is a specific rule requirement to disclose any possible disadvantages in the suitability report. The rule (COBS 9.4.7) can be seen here: http://fshandbook.info/FS/html/FCA/COBS/9/4.
Remember that a disadvantage is different to a risk. For example, there is a risk that investments can fall in value, whereas a disadvantage would be that the recommended product has higher charges than the product being replaced.



Ukraine – 10% drop reporting
Alistair MacDougall Compliance 2020, 2022, COVID-19, FCA, Update
The current hostilities in Ukraine have caused significant market drops and may continue to do so. Accordingly, a reminder about the 10% drop reporting requirements is timely. Readers will recall the early days of the Covid pandemic in 2020 caused a period of market volatility that necessitated issue of 10% drop notifications to clients. […]