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.



Are passives the new benchmark?
Alistair MacDougall Compliance 2018, 2019, FCA, MiFID, Pension, PI
Costs are under close scrutiny by the FCA. What do firms need to consider?