Doctor Who - Battlefield

The first story from the final season of Sylvester McCoy's tenure as the Doctor. The Doctor and Ace arrive on Earth in the late 1990s where they become involved in a battle between King Arthur and Morgaine. However, these are not the heroes of Britain's past but warriors from another dimension - and they recognise the Doctor as the wizard Merlin.

As usual it is down to the Doctor and Ace to save the planet, but this time they find some help in the guise of the Doctor's old UNIT ally, Brigadier Lethbridge-Stewart.