The mighty Jetstream 31/32 will quite happily sit at 230knts (VMO) until 4d and you will be fully configured and stable by 2.5D and if brought back to 160knts there is no rush to bring the speed back after that. I won't bother telling you what she can do empty with a 15knt headwind on a visual. I suspect the Gama Kingair would be similar if not faster.
At 160 you will be flap 10. At 3D gear down flap 20 speed will have washed off to 145knts 2D flap 35 and then 135knts to 200ft. The 135 until 200ft is a BAe limitation not a company limit. Over the fence at 101-109knots. Touchdown into beta not rev no need to touch the brakes unless heavy and you will easy make the heli runway to backtrack.
Sometimes especially if the TP is coming in from the south the area controllers stitch the app controller up a treat by trying to get a Jet in front of a TP below 10k. It never works and always ends up with the approach controller working 10 to the dozen and the TP with an extra 5-10 mins of flight.
Although I do feel for the controllers the couple of times they have arranged things so we can nip in on a visual down the Don valley first. The amount of grumping and moaning off the shuttle was comical, I can see why the can't be bothered. They weren't even on tower by the time we went to ground.