126.825, You specifically state "Slowing on final approach".
BA 737 Gatwick; 160 to 4d causes two problems.
1. 160kts requires flap 15 which requires gear down ie. high drag, noise and fuel burn.
2. BA SOPs say the aircraft should be stable by 1000ft. Stable means landing config, approach speed and engines spooled up. At 4dme height will be approx 1300ft. Approach speeds could vary between 115 to 160kt depending on weight and wind. One mile to decel 45kts and spool up ...aint gonna happen!
Problem 1 is solved by giving 170 to 5 or 6dme. That allows a descent with flap 10 and the gear up (most of the time anyway). Some crews may request it, but when a switched on controller gives it it is much appreciated.
Problem 2 was solved in the past by a quick heads up to the controller eg. "slow final speed". Is that what you want and when do you want it?
Thanks.