I have been twice to the Mizuno fitting centre at Clays, Wrexham. Once for irons, about 10 months ago, and recently for a new driver.
I have been a Mizuno man through and through for the past 30 years, bit i honestly consider the lads there spot on. They take time and patience to ensure that both the infomation they give, their advice, and you yourself are happy with your choice before you place an order or not. You o not have to purchase a set after you custom fitting, unless you are completely happy. Highly recommended