The actual switching process goes swiftly. One issue I have encountered though is that the cashback didn't track within 24 hours as topcashback suggested. However I got a call from Customer Care who assured me that they submitted the details and it should pay out. Time will tell. UPDATE: It is now more than three month after "Free Price Compare" called me to tell me they had informed topcashback of the transaction. Yet topcashbach has no record. Hence I haven't received any cashback yet. I launched a claim with topcashback who submitted to the "Free Price Compare" on the 30th of November 2016, but they still wait to hear back from them. I am disappointed I am still waiting for the cashback (and starting to think I might never receive it), and even more so I feel I have been mislead by Free Price Compare's Customer Care's call who told me it would be fine and who had asked me to change my review. I played along then, but it seems they didn't stick to their assurances.