I was on a flight to London that caught one of these tailwinds last year. I recall a little buffeting mid–Atlantic, don't know if that was in the jet stream or

I was on a flight to London that caught one of these tailwinds last year. I recall a little buffeting mid–Atlantic, don't know if that was in the jet stream or not. Only problem really was that we arrived too early in London and had to circle for half an hour before landing and then wait for immigration & customs to open.