Henderson (The Seeds of Doom)

Sergeant Henderson was a UNIT officer.

Biography
Under Major Beresford's orders, Henderson helped the Fourth Doctor rescue Sarah Jane Smith and Scorby from Harrison Chase.

He was later knocked out by Chase, who then put his unconscious body into his compost shredder machine, killing him. (TV: The Seeds of Doom)

Behind the scenes

 * The character of Sergeant Henderson was created as it was felt there was too little material to warrant bringing back John Levene as Sergeant Benton.
 * Henderson has never been identified with a first name, either in The Seeds of Doom or any spin-off media.