Acc. to Alexa, Global Visas has the most traffic, & it is supposedly one of the largest, if not THE largest visa immigration services in the world. I researched reviews online, & only found a few negative comments--all from India--& 1 or 2 positive comments. The Global Visas account manager was friendly & knowledgeable when I called their London office. So I hired them to help me sort out getting a Highly Skilled Worker (HSMP) visa to the UK. UNFORTUNATELY, Global Visas sr. case manager, Katarzyna Pasternyk, i... read full review »