I'll tell you how good they are.
Okay, they are an internet based marketing and SEO company. In other words they are trying to sell you their time to optimise, build and market your website.
They are based in Warrington.
However when you type into google 'website warrington' or 'seo warrington' or any other numerous combinations that thoretically ought to show them listed in a healthy position on the first page of google theyre nowhere to be seen.
Its the ultimate test for an SEO company, they cant sell their own site, what makes you think they can sell yours?