Hi AB 400, Buzz here. Sir VC-10 has it mostly right. There's that split speed brake up the tail. It's useful.
But the BA146 is fairly lightweight, has heavy duty brakes, and a low approach speed. So wheel brakes are adequate to get her slowed down.
The impressive array of wing spoilers spill enough lift so the wheels have more weight on them, more weight so she skids less from 120-60 knots.
Thust reversers are needed when you are really heavy say 4 or 5 hours of fuel aboard. Then if you reject a takeoff you will probably stay on the runway. The brakes on all the larger airliners will get you stopped without thrust reverse ONCE. You'll have orange-hot brakes and the tires will melt off the rims, but you'll survive....... assuming the guys who have to fix airplanes are in a reasonable mood.
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice.