Single or return ticket to the US????

[b.a. Baracus]

Hi,

I am pretty sure you don't need to buy a return. I know this because I spent a lot of money changing / cancelling flights etc, then I found out that a single is OK in the first place

But please don't take my word for it, to be safe I am sure you will find what you are looking for here Embassy of the U.S. London