I guess I'm lucky I get it at both ends even more fun when you have recent stamps from south america in your passport not only are you going to bludge off the system and overstay your visa but your also coming in with several kilos of white powder strapped to your lower intestine ....there does seem to be a difference though when I'm on a flight coming from Asia that hasnt originated in UK, I notice a substantial decrease in the number of immigration chaps standing at the carousel, but an increase in the number of quarantine inspectors, no doubt checking on the wonderful array of dried animal/plant matter that many Asian vistors bring with them