and Grant Mitchell (Eastenders) was in the commercial. He was on This is Your Life a few years ago (or should it be called Scraping the Bottom of the Barrell's Life?) and this commercial was cited as among his finest achievments.
Surely the answer is Kellogs Fruit & Fibre. The song had a line about bananas, hazelnuts, coconuts and sultanas...followed by...they're tasty, tasty etc.