Doc Martens

Ace was fond of wearing Doc Martens boots. (COMIC: Fellow Travellers, The Good Soldier, PROSE: Untitled, Timewyrm: Apocalypse, Cat's Cradle: Warhead, Heritage, The Time and Tide)

Bernice Summerfield wore Doc Marten boots during her wedding to Jason Kane. (PROSE: Happy Endings)

Behind the scenes
The brand was misspelled "Doc Martin" in The Time and Tide.