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UK Lotto Rollovers Explained: How the Jackpot Grows

UK Lotto rollover: what happens when no one wins the jackpot, how the prize increases, and the Must Be Won mechanism.

Published on 2026-03-08¡Updated on 2026-09-153 min read
UK Lotto jackpot rollover

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Overview

When no ticket matches all 6 main numbers in a UK Lotto draw, the jackpot is not won. That jackpot amount is then added to the next draw's jackpot. That is a rollover.

Rollovers can happen several times in a row, so the jackpot can grow from around ÂŁ2M to tens of millions of pounds.

Your odds per line are the same every draw. A larger jackpot does not make winning more likely.

Since 10 June 2026, a rollover requires no Match 6 in either round of the evening. The two rounds share one jackpot, so it only rolls over when both come up empty.

Important

The jackpot cannot grow forever. It is capped by the Must Be Won rule. When the cap is reached, the jackpot is guaranteed to be won on the next draw.

How the jackpot builds

Each rollover adds money to the next draw. The exact amount depends on ticket sales and the game's rules. More rollovers mean a bigger jackpot—and more media attention, which often increases sales.

Must Be Won — the cap

When the jackpot reaches a set limit (defined by Allwyn), the next draw is a Must Be Won draw. On that draw, the jackpot must be won. Either:

  • Someone matches all 6 numbers and wins the full jackpot, or
  • No one matches 6, and the jackpot is shared among winners in lower tiers (e.g. Match 5+Bonus, Match 5)

So the prize pool is always paid out on a Must Be Won draw.

Viewing rollovers on Fetix

On UK Lotto draws you can see:

  • Jackpot amount for each draw
  • Whether it was a rollover (compare consecutive draws)
  • Number of Match 6 winners (0 = rollover)

Go further on Fetix

FAQ

How many times can the jackpot roll over?

There is no fixed limit. It rolls over until someone wins or it hits the Must Be Won cap.

What happens to the money if no one wins on Must Be Won?

It is shared among lower-tier winners (Match 5+Bonus, Match 5, etc.) according to the rules. The jackpot is always paid out on that draw.

Can I see which draws were rollovers?

Yes. On UK Lotto draws, compare the jackpot from one draw to the next. If it increased and there were 0 Match 6 winners, it was a rollover.

Does a rollover improve my odds?

No. Your odds per line are the same every draw. A larger jackpot does not make winning more likely—only the potential payout changes. Since 10 June 2026 a ticket does enter two rounds instead of one, but each line keeps its own odds.

What is the current jackpot cap?

Set by Allwyn and subject to change. See national-lottery.co.uk for current rules.

Does the two-round format make rollovers less likely?

Yes. Since 10 June 2026 a rollover only happens when both Round 1 and Round 2 miss Match 6 on the same evening, which is less likely than a single round missing on its own.

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Disclaimer

UK Lotto is a game of chance. Rollover and Must Be Won rules are set by the operator. Fetix does not guarantee any winnings.

Sources