In my experience, when the factory warranty is in force, Honda dealers gladly do whatever needs doing ...but only as long as Honda UK give the go-ahead, which they almost always do. But once the car is out of factory warranty, even with an extended warranty (which is not a factory warranty) you start to feel the cold shoulder from the very dealer that you bought the car from and who you've been paying for the services. In other words, the "welcome sir" is still there, but you start to realise that they're not willing to give any free time to investigate anything, which includes reading service bulletins, and/or contacting Honda UK for you.
The tailgate on my car started to go wrong before the 7-year extended warranty on the tailgate was up, but I did not know that there was a 7 year warranty on it. Indeed, it was even going faulty before the 3-year extended warranty was up. When you're using the car daily, you just don't have the time to drive the 10-ish miles to the dealer to keep up the pressure ....and you shouldn't have to.
Each time I press the button on the key-fob to open the tailgate, I know there's a 50:50 chance that it won't open, and I know what the problem is (there's a good thread on TA where someone fixed it himself, it's a slipping electrically operate clutch on the motor ***embly in the roof, as per the Service Bulletin that the stealer never bothered to read).