I never know how to judge fleets that aren’t 40 pts because I’ve not played many games other than the standard 40 pt one. But HMS Oxford is one of England’s best ships, and Aberdeen Baron of course is a fantastic gold runner.
As the Carrion Crew is not English, (and also 4, not 5 pts) you can make it a pure England fleet with HMS Cumberland. I also like the HMS Snipe a lot at 8 points.