Whatever happened to the Veneziana?

Tonight, we went to Pizza Express for dinner, to meet my wife's friend who wanted to introduce her new fiancé to us. I always loved Pizza Express: the food may not be fancy, but the quality is always reliable. But recently, there is something that has been bothering me: the Veneziana, my go-to pizza when i go there, is no longer on the menu. The Veneziana has everything I love in a pizza: capers, olives, and well, that's it. They also give a discretionary 25p to the Venice in Peril fund for every Veneziana sold. Well, they still do, except for every mushroom pizza sold, because they don't sell Veneziana anymore.  My question is why? Why is it no longer on the menu? Because I don't care about mushroom pizza. I mean I really don't. And I am all for saving Venice, mind you, but I will donate to the charity directly rather than eat a mushroom pizza. In the end, the Veneziana allowed me to make a good deed while enjoying a dinner out. Since it is gone, I don't find the menu of Pizza Express so appealing anymore.