The spring heatwave has been welcomed by many people across the UK, but David Cameron has revealed he has been struck down by hay fever as a result.
The Prime Minister had to take medication to combat the condition before appearing on TV.
He said: "There's obviously one or two plants that, when they flower, hit me and so, just this morning, I woke up and I had it."
He told Eamonn Holmes on ITV's This Morning: "One of your people has just given me a pill, so hopefully that will sort me out."
Hay fever is caused by an allergic reaction to plant pollen and affects around one in five people at some point in their life.