Unidentified twin circling Oval cricket ground
It's Friday afternoon so a bit of fun! I'm just listening to Test Match Special on the radio - 3rd One Day International between England and South Africa - the commentators (surprisingly not including Henry Blofeld!) are rather pre-occupied by a twin-prop aircraft repeatedly circling the Oval. Various listeners have e-mailed Aggers with suggestions of which aircraft type it is and what they're up to, but he - himself a pilot - has said it is none of them. Obviously England thrashing the Saffers under Kevin Pietersen - who incidentally inspired my pprune handle - is becoming boring!
Any ideas which type, and what they're doing?