I maybe a bit late joining in this conversation but I also bought the FUFL1810P from Laskys (an internet arm of Comet). Same story, the annoying clucking noise. I contacted Indesit (who make Hotpoint now) and asked them if it was normal as I had never owned a frost free fridge before and had been warned that frost free fridges can be noisy. They offered to send an engineer but warned me as I didn't take out the extended warranty, if there was no fault then they would charge a call out fee of £50. The girl on the line couldn't tell me if it was normal or not. I had second thoughts and called them again and this time the guy seemed to know a lot more about the workings of that fridge and explained that with frost free freezers (at least these Hotpoint models) the fridge is cooled by drawing air from the freezer and there are relays and solenoids that switch in and out to let the cold air into the fridge through the holes at the back of the fridge. I concluded from this that it is highly likely that the noise I am hearing is "normal" and cancelled the visit of the Engineer as I didn't want to be hit for £50.
The damn thing is still clucking but seems to be working OK. The guy at Indesit said" Like all noises that surround you, and I live near a railway track, you get used to it and after a while you don't notice it" Well I haven't got used to it yet!
As for the model you ordered having handles, I know what you mean as the illustration on Comet's web site showed the wrong model. The FUFL1810P doesn't have handles. I went into a Comet shop to check that before I ordered on line because I didn't want handles. The picture for the FUFL1810P on their website was not of the FUFL1810P.
Anyway I guess you are stuck with it now since the demise of Comet but you have the comfort of knowing that you are not alone having to listen to regular clucking from your Fridge/Freezer as I suspect that is normal operating noise for this model and maybe other frost free freezers but I haven't been told that by a professional who really knows.