This one's always a delight; the Doctor is Merlin, the Brigadier returns, and Ace becomes the King of Britain. There are some seriously great moments throughout, from the chalk circle standoff to the Brigadier battling the Destroyer to the Doctor's scenery-chewing rant against nuclear warfare to Morgaine. And of course, Bambera x Ancelyn, a ship which perpetually delights me. I do love a battle couple.

It would be nice to have a future episode explore the Doctor being Merlin; that they haven't yet is quite a shaaaame.