Thanks for the feedback, at least from those of you who didn't feel the need to be abusive about it...
Just because someone offers an opinion with which you disagree doesn't give you permission to resort to personal abuse: "you tie wearing tools", "you must be some sort of ctc office monkey" etc. At least try and have a reasoned debate. Otherwise YOU are the monkey. If you must resort to abuse, at least try and write in properly punctuated sentences.
Back to the point:
It's a trial: Try it properly, give people the chace to get used to it and its timely imposition and then give proper feedback and suggestions for improvements. If you keep cancelling it then it will never be properly evaluated, adapted, changed or abandoned.
Speed control is about matching groundspeeds not airspeeds. If a 10kt IAS differential is actually achieving an increasing distance between aircraft which already have enough separation then it is an incorrect application of speed control.
Couldn't agree more about the need for communication across the board. But we all have to do our bit, and some of the attitudes displayed on this thread don't encourage me to think that it's happening every day!
By the way, the experts tell us that variable speed limits on the M25 reduce bunching. They only come in when traffic is heavy enough to merit it. 270kts could be seen to be like them.