| NIMBLEST | Fastest part of UK motorway, optimum to go around 50 |
| AGOSLEAP | One of the fastest parts of the Isle of Man circuit, coming out of Bray Hill. (4,4) |
| IMPROMPTU | Strangely optimum to get around pretty rough starts by being spontaneous (9) |
| SEVENTY | Normal speed limit on a UK motorway in miles per hour |
| WELCOMEBREAK | Most UK motorway services are operated by Moto, Roadchef or ____ (7,5) |
| EUROPE | Group of around 50 states regret over wish to leave here, initially? |
| DUMPLING | Illegally getting rid of items -- around 50 -- to get some dough? (8) |
| LOLLOP | Bound to turn around 50-50 (6) |
| TIARAS | Queen-Elizabeth-II's-private-collection-of-these-is-believed-to-number-around-50 |
| HEALTH | Condition of a UK Prime Minister around 50 (6) |
| TYRES | They roll on UK motorways |
| FELDSPAR | Constituting around 50 per cent of Earth's crust, any of various rockforming minerals including amazonite, labradorite and moonstone (8) |
| KAWERAU | Bay of Plenty town where, for around 50 years, all of New Zealand's newsprint was produced (7) |
| CLOSECALL | Conclusion that's around 50-50? (5,4) |
| HOOPLA | Which person told dad, around 50 to fuss? (6) |
| CARTLOADS | Lots of vehicles crushing little creature, going around 50 (9) |
| TILES | Draws around 50 parts of a mosaic (5) |
| SIMPLER | Less complicated to act coy around 50 (7) |
| ADDLING | Inverse of subtracting around 50 is confusing |
| SALVE | Save around 50 to settle (5) |