Thanks for the insight regarding HK airspace.
One particular occurrence I have noticed with increasing prevalence is the shortened base turn that follows speed reductions. It happens so regularly APP/ director recognises it and advises the track miles to run. Speed reductions and increased descent rates in jet aircraft don't work! Would it be possible to maintain aircraft speed and add another mile or two??
Every time this happens we are constantly been told to reduce further due to closure rates on preceding aircraft.