The tier 4 visa starts in August. I would like to come at the end of May to find a place to live and visit some friends.

Hello, I have been issued with a student tier 4 visa as I am going to university later this year. I wish to travel to the UK earlier than the visa allows me to therefore I need to know a) will immigration allow me to enter the country as a general visitor if they see I have a tier 4 visa, and b) to ...