How can i find out if a company is legal and all above board?

I have been offered a job at a company who i have never heard of and there website is pretty weak. How can I find out if they are all above board? I am abit worried because the job is dealing with money and Forgein exchange!

Dont want to start work and then find out later they are laundering money or something!!


I have all these details below--
( I have not put the numbers in there incase any employees are on here)

Company Registration No
VAT Registration No.
HM Customs & Excise Money Laundering Registration No.

How do i use these details to find out?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).