| TUBE | Any one of the trains running on London Underground lines colour-coded on an iconic map; or, an old word for a telescope (4) |
| STOW | Pack some of the trains to Wales (4) |
| PANORAMA | Map or an adaptation with a very wide view (8) |
| ATLAS | A Titan; a book of maps; or, an architectural telamon (5) |
| MOORGATE | A station on four London Underground lines (8) |
| LOWERMORDENTS | Grace notes back street after area of London Underground line's southern terminus (5,8) |
| LULLABY | Primarily, London Underground lines leave a baby yawning. . . as can this! (7) |
| TRANSONIC | No trains running at the speed of light or at the speed of sound (9) |
| SMITH | Founder of stratigraphy whose colour-coded map of geological strata represents rock including blue lias, red marl and forest marble (5) |
| TUBES | Related to "straight trumpets", word for ducts, such as the small anatomical Fallopian or Eustachian examples; hoses or pipes; or, trains running through vasiform tunnels (5) |
| TRANSIT | Passage of trains running on time (7) |
| GREENPARK | Station on Jubilee, Piccadilly and Victoria Lines on London Underground (5,4) |
| EDDIEMUNSTER | Son of Canadian actress Yvonne De Carlo's character Lily on an iconic 1960s family sitcom: 2 wds. |
| ELS | Trains running on a Loop? |
| MONORAIL | Overhead train running on one track (8) |
| TEMPLE | Station on the Circle and District underground lines (6) |
| NORTHERN | Black line on London underground map |
| CODERED | Immediate stop order issued to trains on London Underground (4,3) |
| BRIDESMAID | Going to the match, one may be at the back of the train |
| PINKINGSHEARS | Colour-coded sign gets word of dressmaker's equipment (7,6) |
