Hi Terry,
Have you checked out the link I put up above? It's probably a good idea to put your question there as this thread is off-topic for london while the one above is specifically for restaurants in Zurich and chances are with foodies subscribed to it.
BTW - it depends on your budget for the meal. We are in Switzerland after all. Depends on how much you want to impress

Also mention what sort of food you're after. I'm sure a few of us here could give you some suggestions.
Cheers,
Nanda.