Long term visitor visa (2 years) for company director without previous "performance" [closed]

The director of our company wants to apply for a long term business visa to attend client meetings and negotiations. What are the chances he will be granted a 2 year long-term visitor visa if this is his first time applying for a UK standard visitor visa?

I remember reading a number of times that UKVI tends to look for "performance" in relation to 6 month visitor visas when making these kind of decisions.