Watchdog survey question

Watchdog recently aired its survey about airline popularity (in which VS came 2nd to BA - ooops!).
In the footage, the presenter was featured in, on and around a 747 which seemed to have a very weird engine configuration (2 engines on each wing, but attached to each other in one location). Which 747 was it, which airtline operates it and can it fly??
Thanks!
In the footage, the presenter was featured in, on and around a 747 which seemed to have a very weird engine configuration (2 engines on each wing, but attached to each other in one location). Which 747 was it, which airtline operates it and can it fly??
Thanks!