Quote Originally Posted by Terpe View Post
In principle your visa is valid for entry to UK anytime during it's validity.
So No it's not obligatory to fly to UK on the first date of validity (April 18 2011)
thanks so much Terpe Im really worried that I will need to travel already in april 18 coz I really want to spend with my mom's b-day this coming april 22. coz It will take years again that possible i can visit PI again. thanks