A Lucky 15 covers every possible combination from four selections: 4 singles, 6 doubles, 4 trebles and 1 four-fold. That’s 15 bets at your unit stake. The structure means you collect something as long as at least one selection wins, and the returns escalate sharply if three or four come in.

The numbers tell the story. Four selections at 3/1, 4/1, 5/1 and 6/1 with a £1 unit stake costs £15. If all four win, you collect £1,592. If three win, you’re looking at anywhere from £140 to £310 depending on which three. Even two winners returns between £30 and £76. One winner at 6/1 returns £7 — a loss on the bet, but not a wipeout. That graduated payout structure is the entire point.

Most bookmakers offer bonuses on Lucky 15s: a consolation payout if only one selection wins (usually double the odds), and a percentage bonus if all four win (typically 10-20%). Factor these in and the value equation shifts. The Lucky 15 works best when you have four genuine fancies at decent prices — cramming in short-priced selections defeats the purpose because the singles barely cover your total outlay.