DEFPOTEC - ..Or the quicker they arrive in someone else's sector (esp. on such a short flight!)
If you think that 300kts @ 4000' on the way to the field (in not uncongested airspace) is 'how a jet should be flown' then you've probably more experience flying around TX and the US than in the UK
Or we're talking about a different kind of 'jet'..
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...proceeding below Decision Height with CAUTION...