Hi, I used the Toyota dealer to look at the binding brakes as it was nearer than the Lexus garage and didn't want to drive 40 miles with the brakes sticking. Cost £60. So if that is Toyota hourly rate, a lot cheaper than the Lexus hourly rate.
Not sure how the Relax warranty would work if it was a Toyota stamp in the service book. May be worth checking. But I did have a survey from Lexus a while back asking opinions on using Toyota for servicing, so this may be something they are looking at for the future.
Makes me wonder, I usually use Lexus Chester who are twinned with Skoda and they take the Lexus cars to the Skoda workshop!