It depends on how the wind is blowing,I heard that this eruption has been going on since January but the wind changed recently.
Down here in Hampshire we haven't noticed it much, as we aren't in a flight path. My car was covered with a light dust this morning but that is not that unusual,and my wife noticed a sulphur smell outside last night but we thought it was the local oil refinery.
Could this be the end of air travel as we know it? Back to propeller driven aircraft and dirigibles within a year. That should suit the tree huggers but oh dear all this cr@p that Eyjafjallajokull is spewing out into the atmosphere must be even more polluting than the aircraft it is grounding... Perhaps global warming is a product of nature not civilisation?