Complex sentence: A large ITV logo by the entrance has been placed next to the gate and by the entrance to the studio tour, the signs have been removed and replaced with the ITV logo, and the Granada name on the gateway painted over.
Split into simpler sentences: A large ITV logo by the entrance has been placed next to the gate. By the entrance to the studio tour, the signs have been removed and replaced with the ITV logo, and the Granada name painted over.