I have been granted a UK visitor visa which I applied for in Dubai. My visa application states 24th June, but my visa start date states 25th June. I have my graduation ceremony to attend on 25th June so I want to travel on 24th June. What can I do about this, as the airline will not allow me board before 25th?
If your visa says 25 then 25 it is. You can not reach there on 24th and claim that I applied for 24th, even the airline will refuse boarding. Try to rebook so you reach in the early hours of 25th.