Sitting in my garden sipping Pimms and lemonade this lunchtime I saw an aircraft flying overhead, or it might have been a UFO. It was very high indeed and I could really only see there was something there because there was a long thin line of what looked like white smoke behind it. It can't have been a C-130 because they are big, but it might have been a VC10 or Tristar because there were no pies left in my fridge. I think it was a UFO though, I certainly couldn't identify it. Can anyone help?