Is there much diesel out of Paddington now? Sleeper to Cornwall is the one I often see but the rest is all electric for the Paddington bit - of course trains g

Is there much diesel out of Paddington now? Sleeper to Cornwall is the one I often see but the rest is all electric for the Paddington bit - of course trains going West switch to diesel once they get off the electrified line e.g. at Swindon for Cheltenham