Riverwalk's explanation sounds the most likely, but if so, what do Waitrose think they are doing?
I have yet to go into a restaurant that will not make a simple adjustment to a dish at a customer's request. Mashed potatoes being popular these days and as I do not like them, I always ask if I can swap them for potato in another form. I usually look down the menu to see what the restaurant offers, usually it is chips, but sometimes boiled and occasionally baked or roasted. My request has never been refused.
Are we going to be told that we have to accept every dish as made up and calorie counted and cannot add or subtract anything from it.
What about those coffee and tea breaks with a delicious cream cake. Will they be banned?
Many chain eateries have the calorie count for every dish on their website, so it is possible to plan a meal out in advance.