Journey details: Flight from Bangkok to London (11 hours)
The scene: Me, my wife and a plane full of solo male travellers in their 40s, 50s and 60s.
Passenger description: Male, white, about 60, with suspiciously fresh looking military tattoos.
The review: I was sitting in the middle of a bank of three seats. To my left, in the window seat, was my wife. To my right, in the aisle seat was a single man. Throughout the 10-hour flight, he neither slept, read or watched the telly. He just stared ahead. Occasionally his leg would twitch and bang in to mine. He would then say "sorry", slightly too loudly and slightly too quickly and look at me for a long five seconds. Coincidentally, I found myself unable to sleep, read or watch telly.
Verdict: Petrifying.
Rating 0-5: 0