dH Hornet was completed, but never saw action.
There were protracted discussions about a "large Mosquito" with four engines, large bomb load, very good high level performance. Not proceeded with, IIRC it was felt jets were the next logical step. I believe they also debated a Mossie variant with twin Sabre engines, again not proceeded with, I assume engines that large would have required a fundamental re-design, which up-rated Merlins never did.