All four episodes of The Macra Terror are missing from the BBC Archives.  All that remains of the serial is the audio soundtrack, telesnaps and several short clips excised by the Australian Censorship Board.  For the purposes of this marathon I viewed Loose Cannon’s excellent reconstructions, links for which appear below.

Loose Cannon’s The Macra Terror, Episode 1 Part 1

Loose Cannon’s The Macra Terror, Episode 1 Part 2

Loose Cannon’s The Macra Terror, Episode 2 Part 1

Loose Cannon’s The Macra Terror, Episode 2 Part 2

Loose Cannon’s The Macra Terror, Episode 3 Part 1

Loose Cannon’s The Macra Terror, Episode 3 Part 2

Loose Cannon’s The Macra Terror, Episode 4 Part 1

Loose Cannon’s The Macra Terror, Episode 4 Part 2