I left UK in 2009 after overstaying by few years. I was interrogated at the airport before departing and I believe they entered my info in their system. I was leaving voluntarily and was not deported to make it clear. I was citizen of one of country in Asia (Do not want to disclose) when I overstayed in UK. Now I am US citizen and wants to visit UK for vacation. Being US citizen I do not require visa to enter UK but I want to know if there will be any problem visiting UK for vacation? Please advice.