| ARROWROOT | One of those in the Marantaceae family in Dart and part of The Underground system (9) |
| ROOTCANAL | One of the underground systems has a chamber for mouthy type facing the drill perhaps (4,5) |
| ROOTLET | Small component of the underground system, part keeping old trains, primarily, on time |
| AIM | Skill needed in darts and archery |
| ROUTE | The way the underground system is heard (5) |
| HAMPSHIRE | County with the floral emblem of the dog rose, home to Highclere, Mottisfont Abbey, parts of the New Forest, Test Valley, Watership Down and parts of the Wayfarer's Walk (9) |
| MACEDONIA | Geographical and historical region of the Balkan peninsula considered to include parts of six countries, including Greece, Bulgaria, Albania and parts of the former Yugoslavia |
| BLOWPIPES | Play instruments in Dart pieces (9) |
| TRAVERSED | Moved across turbulent Dart and Severn, almost (9) |
| EXUBERANT | Lavish underground system once operated with everything moving ahead of time (9) |
| GREATGLEN | Containing Loch Ness and parts of the Grampian Mountains, a valley and geological fault extending from Moray Firth to Loch Linnhe (5,4) |
| AMISSIBLE | A bass seen in Dart likely to be lost! |
| METRONOME | Device used by musicians in underground system? No, this person! (9) |
| ROOMATTHETOP | Runner in part of The Underground and that man from the highest point of attic (4,2,3,3) |
| CHEDDAR | Containing Britain's largest gorge and part of the Strawberry Line cycle route, village on the edge of the Somerset Levels where the cheese of the same name originates (7) |
| GUNWALE | Part of a boat, good one in France and part of the UK largely (7) |
| OXON | Abbreviated name for the county containing the Vale of the White Horse and parts of the Chilterns with the snake's-head fritillary as its flower (4) |
| CHANCEL | Order to stop going round the front of the house and part of the church (7) |
| SURREY | One of the home counties, site of Box Hill and parts of the North Downs (6) |
| ROUND | Like the Circle Line, it's part of the Underground (5) |
