It was pretty frightening though. I just wonder what it could've been that was so serious. The plane never really seemed to increase speed much after take-off, and we only just got above cloud level and then started circling. After the captain said we're going back, no-one uttered a word. It's not fun at all.
The £5 voucher was for Heathrow Terminal 5. I used it to buy a single egg of caviar at Prunier!