640D Gran Coupe air con not working

[London GT3]

Anyone else had a complete failure of their air conditioning. I normally run with it on but turn the temperature down today and no air con. 13 plate 640D GC with 18,000 miles. Checked all the settings and all seems OK. Could it be a holed air con radiator or are there any other known faults?

[London GT3]

Thank you both for your replies. It is booked in next Wednesday so I will report back the outcome. Haven't noticed any odd smells. Hoping that the cooler hasn't been holed.

[London GT3]

Well, it went in last week and was diagnosed as needing a new condensor. The part was on back order so there was a week delay but the car was fixed yesterday and returned. All sorted and under warranty.