Hi my name is Neil just bought 10 plate fiesta titanium and had to take to dealers to report air con clicking every 20secs or so, most annoying never heard this before on any previous cars, dealer said its normal, but i do not agree you dont buy a car that clicks so often, and quite loud quite embarrassing that your pride and joy sounds defective. ford should take responsibility for an obvious defect, ford probably told dealers not to repair and just fob the customer off as its a costly fix .more costly for ford in the long run with many disgruntled customers switching from ford. so come on ford fix the issue NOW!

its possibly just the aircon compressor clutch engaging/disengaging which is quite normal

My wifes Sport car is the same.