Broker to check documents uk

I am looking to hire a broker to check important legal documents for me. The documents are all in English and I require a detailed report on the findings after the documents have been checked. The broker must have expertise in this field and pay close attention to detail. This is a critical task and as such, I will need the report produced promptly and of the highest quality.

I mainly need broker to check if there are any financial instruments on my documents i provide