Brookson's don't do their job
Brookson have got almost every document they have sent me wrong.
They heavily automate a lot of the accounting work via a very specific workflow, so if your situation doesn't fit that workflow then they are useless.
Anything outside of that workflow is almost impossible for them to get correct. You can complain but it will take months and it will get you nowhere.
They will still put all your accounting through the automated workflow that they know will get it wrong. They then will try to get someone to manually fix it after the fact, unfortunately, this is process is highly error prone and doesn't resolve the issue.
So, unless your situation is you require the most basic accounting imaginable and will never buy/sell/work in a different country. Then maybe they would be ok, but I wouldn't recommend them to anyone. Being with them has been traumatic.