Complex sentence: NS&I, British Telecom, Specsavers and Egg Banking brands; then appeared in an advert for Go Compare, where he figured the formula for a black hole, and had the fictional Italian character Gio Compario sucked into one.
Split into simpler sentences: NS&I, British Telecom, Specsavers and Egg Banking brands;. He has also appeared in an advert for Go Compare, where he figured the formula for a black hole, and had the fictional Italian character Gio Compario sucked into one.