Thanks for your replies, much appreciated. Yes, I applied for the returning resident visa and got a vignette in my passport. At the Visa processing center, they told me to open the the decision letter and asked me to tell (in front of them) the decision. When I said that the decision was "yes ...

I have spent more than 2 years after getting ILR status. So when I had to come to UK, I applied for the "Returing resident visa" and it was approved. At the border security check, they asked for the ILR BRP card and they kept the card though it has still validity. I do not know what to do, now I am ...