Today they make a PA at the beginning of the flight telling you to take wine for lunch with the first drinks round, as there is no drinks round with lunch! Although I have been assured by a BA CC that this is not in the service manual, it happens all the time!
This is not how the service should be done!
According to the service manual a choice of red and white wines should be offered with the meal but some crew do shortcuts and offer it during the bar service before instead.