The first service on the Honda jazz M4 is £235, I think this a bit over the top, after my first service I will find cheaper places to service my car.
1. Ring Honda dealers for a price (comparison).
2. See if you can get/ should have been offered the Service Plan at £540 (?) on purchase. If so buy it. If you were not offered it, ask why.
3. Check the Honda Fixed Price Service prices on the Honda website.
4. Do use a Honda dealer whilst the car is under warranty. I know strictly you don't have to but it could save endless hassle if you have a problem.
5. Find another Honda Dealer. You can use any.