| DEDUCE | Work out 2 A· 500 (6) |
| ATOMICWEIGHTS | Atomic units that measure ratios rather than dimensions ...or a gym where nuclear engineers work out: 2 wds |
| PLANB | Alternative if things don't work out (2 wds.) |
| BACKUPPLAN | Operations if things don't work out (2 wds.) |
| MONKEY | A slang term for A£500 (6) |
| SCAMEL | In 'The Tempest' (Act 2, Scene 2), a word of unknown meaning, thought to be a bird (6) |
| DOUBLE | From "two", a quantity twice as much; two of a sort together; or, a duplicate, exact counterpart or twin (6) |
| LEADIN | "A-one, a-two, a-one two three four", e.g. (6) |
| BOTHAM | Star you may have seen at 2 a.m.? (6) |
| ARGYLL | In which county did a 500 tonne landslide disrupt traffic? (6) |
| RAHMAN | Musician who recorded 'Maa Tujhe Salaam' without retakes at 2 a.m. (Last name) (6) |
| WAVELL | In World War II, a victor in a very thorough way! (6) |
| UPLATE | Watching cake-decorating videos at 2 a.m., say |
| CHACHA | Tea for Two - a Latin American dance? |
| MONKEYPUZZLE | Some pine for a A£500 crossword (6,6) |
| FLUTE | Aerophone played by Frederick II; a groove in a column or cloth; a frill in a frock; a tall piece of stemware for champagne; or, a type of baguette (5) |
| SUSS | Attempt to work out two thirds of the county (4) |
| TRAINFARE | Work out two notes will suffice for cost of ticket |
| GREASEMONKEY | Escort service provider perhaps - bribe with A£500 (6,6) |
| MONKEYNUT | Seed for A£500 given to head (6,3) |
