Hi,
I'm from Los Angeles and looking to see if my 17 yr daughter and I can handle a afternoon/overnight layover in London from our trip in Spain. We will be arriving in LHR @ 13:30 and fly out the next day to Los Angeles @ 15:30. We are thinking we can make it into Westminster for the afternoon/evening. I recall the Heathrow queue can be a nightmare so not sure if we have enought time.