Heard an aircraft with a Mayday at Lanzarote last week, due to low on fuel. We heard him attempt two approaches and go around and was attempting a third (on the opposite runway) when ATC told him to break off the approach and climb, due to an aircraft doing an approach to the opposite runway (the other aircraft was below his altitude). There then followed an interesting discussion about the fact he was Mayday traffic, and therefore other, non emergency traffic should be out of the way. ATC seemed to treat the Mayday aircraft no different from the rest of the traffic trying to get in and the aircraft had no choice but to climb as he was in IMC. Interesting. I was aware that not all countries will know what a PAN is but I thought Mayday was pretty much international. (In case you were wondering, the last we heard, the Mayday aircraft was diverting).