The LCY situation I pointed out to an hours-builder many years ago who though that it was OK to ignore the 'glide clear' rule just because some Air Trafficker gave him route clearance. When he argued, I said 'Either replan the flight or I'll cancel your booking'. He replanned it.
Also led a 3-ship of SEP ac into Northolt some years ago (with special approval) for a charity purpose - flying Beaujolais Nouveau in from Manston. Ignored Northolt ATC's attempts to vector us in over congested North London and had much fun instead weaving down from Bovingdon obeying the glide clear rule, then joined downwind for stream glide landings.