There is a "standard gap" procedure at Aberdeen which gives spacing of 8nm between fixed wings and a speed limit of 160kt from 8nm from touchdown. Helicopters are spaced at 6nm from whatever is in front as it crosses the threshold.
The tower controller can suspend this procedure when traffic permits and allow radar to pack them in. In this case the turboprop would have been 4nm behind you if it was a Saab 2000 or 6nm if it was a Jetstream 41. In a nil headwind condition, it could have got tasty if you stopped completely on the runway and then rolled gently to the end.
BTW, don't believe that turboprops are not particularly fast on approach. I've seen them do 220kts to 4nm. Try that in your 738 with our titchy runway!
