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An ERNIE money box

Premium Bonds is a lottery bond scheme organised by the United Kingdom government since 1956. At present it is managed by the government's National Savings and Investments agency.

The principle behind Premium Bonds is that rather than the stake being gambled, as in a usual lottery, it is the interest on the bonds that is distributed by a lottery. The bonds are entered in a monthly prize draw and the government promises to buy them back, on request, for their original price.

The government pays interest into the bond fund (4.15% per annum in December 2024 but decreasing to 4% in January 2025)[1] from which a monthly lottery distributes tax-free prizes to bondholders whose numbers are selected randomly. The machine that generates the numbers is called ERNIE, an acronym for "Electronic Random Number Indicator Equipment".[2] Prizes range from £25 to £1,000,000 and (since September 2023) the odds of a £1 bond winning a prize in a given month are 21,000 to 1.[3]

Investors can buy bonds at any time but they must be held for a whole calendar month before they qualify for a prize. As an example, a bond purchased mid-May must then be held throughout June before being eligible for the draw in July (and onwards). Bonds purchased by reinvestment of prizes are immediately eligible for the following month's draw.

Numbers are entered in the draw each month, with an equal chance of winning, until the bond is cashed. As of 2019, each person may own bonds up to £50,000.[4] Since 1 February 2019, the minimum purchase amount for Premium Bonds has been £25. As of September 2023 there are over 121 billion eligible Premium Bonds, each having a value of £1.[5]

When introduced to the wider public in 1957, the only other similar game available in the UK was the football pools, with the National Lottery not coming into existence until 1994. Although many avenues of lotteries and other forms of gambling are now available to British adults, Premium Bonds are held by more than 24 million people,[6] equivalent to more than 1 in 3 of the UK population.

History

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The term "premium bond" has been used in the English language since at least the late 18th century,[7] to mean a bond that earns no interest but is eligible for entry into a lottery.

The modern iteration of Premium Bonds were introduced by Harold Macmillan, as Chancellor of the Exchequer, in his Budget of 17 April 1956,[8] to control inflation and encourage people to save.[9] On 1 November 1956, in front of the Royal Exchange in the City of London, the Lord Mayor of London, Alderman Sir Cuthbert Ackroyd, bought the first bond from the Postmaster General, Dr Charles Hill, for £1. Councillor William Crook, the mayor of Lytham St Anne's, bought the second. The Premium Bonds office was in St Annes-on-Sea, Lancashire, until it moved to Blackpool in 1978.[10]

Maximum Holding
Date Amount
01-11-56 £500
01-08-60 £800
21-04-64 £1000
14-04-67 £1250
01-04-71 £2000
11-09-78 £3000
21-04-80 £10,000
03-04-93 £20,000
12-05-03 £30,000

Winning

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Winners of the jackpot are told on the first working day of the month, although the actual date of the draw varies. The online prize finder[11] is updated by the third or fourth working day of the month. Winners of the top £1m prize are told in person of their win by "Agent Million", an NS&I employee, usually on the day before the first working day of the month.[12] However, in-person visits were suspended, starting in May 2020, during the COVID-19 pandemic in the United Kingdom.[13]

Bond holders can check whether they have won any prizes on the National Savings & Investment Premium Bond Prize Checker website, or the smartphone app, which provides lists of winning bond numbers for the past six months.[14] Older winning numbers (more than 18 months old) can also be checked in the London Gazette Premium Bonds Unclaimed Prizes Supplement.[15]

Odds of winning

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In December 2008, NS&I reduced the interest rate (and therefore the odds of winning) due to the drop in the Bank of England base rate during the Great Recession, leading to criticism from members of Parliament, financial experts and holders of bonds; many claimed Premium Bonds were now "worthless", and somebody with £30,000 invested and "average luck" would win only 10 prizes a year compared to 15 the previous year.[16][17] Investors with smaller, although significant, amounts would possibly win nothing.

From 1 January 2009 the odds of winning a prize for each £1 of bond was 36,000 to 1. In October 2009, the odds returned to 24,000 to 1 with the prize fund interest rate increase.[18] The odds reached 26,000 to 1 by October 2013 and then reverted to 24,500 to 1 in November 2017.[19]

As of September 2023, the odds of winning are 1/21000;[20] resulting in the expected number of prizes for the maximum £50,000 worth of bonds being 29 per year.

Prize fund distribution

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The prize fund is equal to one month's interest on all bonds eligible for the draw. The annual interest is set by NS&I and was 1.40% as of December 2017, reducing to 1.00% as of December 2020. This was increased to 2.2%, as of October 2022 then increased again to 3% as of January 2023 and is now at 4.65% from September 2023.[21] The following table lists the distribution of prizes on offer in the September 2023 draw.[22]

Prize band Prize value Estimated number of prizes each month Odds of winning with a £1 bond
Higher value
10% of the prize fund 		£1,000,000 2 1 in 60.72 billion
£100,000 90 1 in 1.349 billion
£50,000 180 1 in 674,636,890
£25,000 361 1 in 336,384,045
£10,000 902 1 in 134,628,205
£5,000 1,802 1 in 67,388,813
Medium value
10% of the prize fund 		£1,000 18,822 1 in 6,451,740
£500 56,466 1 in 2,150,580
Low value
80% of the prize fund 		£100 2,338,498 1 in 51,929
£50 2,338,498 1 in 51,930
£25 1,026,981 1 in 118,249
Total value
(September 2023) 		£470,559,225 5,782,602 1 in 21,000

Economic analysis

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While the mean return is 4.4% as of March 2024, the median return is lower. For an investor with the maximum £50,000 invested, the median return is 3.9% (£1,950). For investors with lower amounts invested, the median return is lower. The typical investor with £1000 or less invested will receive nothing.[1]

Premium Bonds are tax free, so are more attractive to higher rate taxpayers.[1]

ERNIE

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ERNIE 1 on display at the Science Museum, London, 2012

ERNIE - an acronym for "Electronic Random Number Indicator Equipment" - is the name for a series of hardware random number generators developed for this application. There have been five models of ERNIE to date. All of them have generated true random numbers derived from random statistical fluctuations in a variety of physical processes.

The first ERNIE was built at the Post Office Research Station by a team led by Sidney Broadhurst. The designers were Tommy Flowers[23] and Harry Fensom and it derives from Colossus, one of the world's first digital computers.[24][25] It was introduced in 1957,[2] with the first draw on 1 June, and generated bond numbers from the signal noise created by neon gas discharge tubes. ERNIE 1 is in the collections of the Science Museum in London and was on display between 2008 and 2015.[25]

ERNIE 2 replaced the first ERNIE in 1972.[2]

ERNIE 3 in 1988 was the size of a personal computer;[2] at the end of its life it took five and a half hours to complete its monthly draw.

In August 2004, ERNIE 4 was brought into service in anticipation of an increase in prizes each month from September 2004.[2] Developed by LogicaCMG, it was 500 times faster than the original and generated a million numbers an hour; these were checked against a list of valid bonds. By comparison, the original ERNIE generated 2,000 numbers an hour and was the size of a van.[2]

ERNIE 4 used thermal noise in transistors as its source of randomness to generate true random numbers. ERNIE's output was independently tested each month by the Government Actuary's Department, the draw being valid only if it was certified to be statistically consistent with randomness. At the end of its life it was moved to Bletchley Park's National Museum of Computing.

ERNIE 5, the latest model, was brought into service in March 2019, and is a quantum random number generator built by ID Quantique. It uses quantum technology to produce random numbers through light, replacing the former 'thermal noise' method. Running at speeds 21,000 times faster than the first ERNIE, it can produce 3 million winners in just 12 minutes each month.[26]

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ERNIE, anthropomorphised in early advertising, receives Valentine cards, Christmas cards and letters from the public.[2] It is the subject of the song "E.R.N.I.E." by Madness, from the 1980 album Absolutely. It is also referenced by Jethro Tull in their album Thick as a Brick.

In other countries

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Similar prize schemes operate in other countries, for instance this Premium Prize Bond certificate from India

Premium Bonds under various names exist or have existed in various countries. Similar programmes to UK Premium Bonds include:

  • In the Republic of Ireland, Prize Bonds also originated in early 1957.
  • In Sweden, "Premieobligationer" usually run for five years and are traded on Nasdaq OMX Stockholm. The unit (one Bond) is generally 1000 SEK or 5000 SEK. Holders of 10 or 50 consecutive bonds starting at 1 + N * 10 or 50 are guaranteed one win per year.[27] Outstanding bonds as of September 2013 were around 28.9 billion SEK.[28]
  • In Denmark, "Premieobligationer" usually ran for five or 10 years with a fixed prize list printed on the physical bonds. They were physical bearer bonds and most series were extended one or more times by another 5 or 10 years. The last series have now ended and must be redeemed for their principal cash within 10 years of the final ending dates.[29] The bonds were generally identified by their colour, for instance the blue premium bonds were issued in 1948, and were redeemed in 1998 (10 years + 4 10-year extension).[30] The first 200 DKK of each prize was tax free, the rest taxed at only 15% (compared to 30% or more for ordinary income).[31]
  • In New Zealand, "Bonus Bonds" were established by the NZ Government in 1970 and sold to ANZ Bank in 1990.[32] In August 2020 it was announced that the scheme would close due to low interest rates reducing the prize pool. At the time of the announcement there were 1.2m bondholders with NZD $3.2 billion invested.[33]

Unrelated concepts

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In 2023, American economist Paul Krugman used the name "premium bonds" for an unrelated type of bond that he proposed to avoid a default due to the United States debt ceiling.[34]

Academic studies

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In 2008, two financial economists, Lobe and Hoelzl, analysed the main driving factors for the immense marketing success of Premium Bonds. One in three Britons invest in Premium Bonds. The thrill of gambling is significantly boosted by enhancing the skewness of the prize distribution. However, using data collected over the past fifty years, they found that the bond bears relatively low risk compared to many other investments.[35]

Aaron Brown discusses in a 2006 book Premium Bonds in comparison with equity-linked, commodity-linked and other "added risk" bonds.[36] His conclusion is that it makes little difference, either to a retail investor or from a theoretical finance perspective, whether the added risk comes from a random number generator or from fluctuations in financial markets.

See also

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References

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  1. ^ a b c Lewis, Martin; Saxon, Helen (1 July 2024). "Premium Bonds: Are they worth it?". MoneySavingExpert. Retrieved 18 August 2024.
  2. ^ a b c d e f g "Meet ERNIE". National Savings and Investments. Retrieved 27 July 2015.
  3. ^ "Interest Rates". National Savings and Investments. 3 August 2020. Retrieved 24 February 2023.
  4. ^ "Premium Bonds investment limit rises". BBC News. 1 June 2015. Retrieved 4 November 2021.
  5. ^ "How many premium bonds are there?". Money Marvel. 1 April 2023. Retrieved 28 August 2023.
  6. ^ Hughes, David (4 October 2022). "The winning Premium Bonds numbers for October 2022, and how to check if you have won". inews.co.uk. Retrieved 6 October 2022.
  7. ^ Journal of the Royal Statistical Society 52 316 (1889)
  8. ^ Horne, Alistair (1989). Macmillan 1894–1956, volume I. London: Macmillan. p. 383. ISBN 0-333-27691-4.
  9. ^ "The History of Premium Bonds". Archived from the original on 4 December 2008. Retrieved 7 April 2009.
  10. ^ "The history of Premium Bonds". NS&I. Archived from the original on 2 January 2010. Retrieved 7 April 2009.{{cite web}}: CS1 maint: unfit URL (link)
  11. ^ "Premium Bonds prize checker". National Savings and Investments. Retrieved 28 March 2011.
  12. ^ "Your Premium Bonds prizes". Nsandi.com. 3 August 2020. Retrieved 4 November 2021.
  13. ^ Coombe-Whitlock, Connor (12 May 2020). "Premium bonds: Jackpot winners will no longer be visited by 'Agent Million' – what to do". Express.co.uk. Retrieved 4 November 2021.
  14. ^ "Premium Bond Prize Checker". Nsandi.com. Retrieved 10 April 2012.
  15. ^ "London Gazette Unclaimed Prizes supplement". London-gazette.co.uk. Retrieved 10 April 2012.
  16. ^ Butterworth, Myra; Wallop, Harry (5 December 2008). "Savings". The Telegraph. London. Retrieved 14 January 2010.
  17. ^ Jones, Rupert (6 December 2008). "Now bond prizes are at a premium | Money". The Guardian. London. Retrieved 14 January 2010.
  18. ^ "Higher payouts from Premium Bonds". BBC News. 16 September 2009. Retrieved 14 January 2010.
  19. ^ "Interest rates". Nsandi.com. 3 August 2020. Retrieved 4 November 2021.
  20. ^ "NS&I Premium Bonds". Nsandi.com. 3 August 2020. Retrieved 14 February 2021.
  21. ^ "NS&I increases interest rates". Nsandi.com. 25 October 2022. Retrieved 25 October 2022.
  22. ^ "NS&I Premium Bond prize draw details". Nsandi.com. Retrieved 3 December 2017.
  23. ^ "BBC Inside Out – Premium Bonds". BBC. Retrieved 14 January 2010.
  24. ^ Colossus: the secrets of Bletchley ... – Google Books. OUP Oxford. 23 February 2006. ISBN 9780192840554. Retrieved 14 January 2010.
  25. ^ a b Schofield, Jack (13 June 2008). "First ERNIE computer picked for Science Museum". The Guardian. Retrieved 27 July 2015.
  26. ^ Collinson, Patrick (1 March 2019). "Premium bond Ernie takes quantum leap into fifth generation". The Guardian. Retrieved 1 March 2019.
  27. ^ "Swedish premium bonds, English summary". Swedish Government. Retrieved 12 September 2013.
  28. ^ "List of outstanding Swedish Premium bond series". Swedish Government. Retrieved 12 September 2013.
  29. ^ "Redeeming of Premium Bonds (in Danish)". Danish Government. 19 November 2012. Archived from the original on 4 October 2013. Retrieved 12 September 2013.
  30. ^ "Proclamation on renewal of two State Premium Bond Loans". Danish Minister of Finance. 18 December 1987. Retrieved 12 September 2013.
  31. ^ "Law authorizing the issue of domestic state loans". Queen of Denmark and Danish Parliament. 28 March 1984. Retrieved 12 September 2013.
  32. ^ "Brian Gaynor: Who are the real Bonus Bonds winners?". The New Zealand Herald. 8 September 2018.
  33. ^ "Kiwis withdraw $766 million from ANZ's Bonus Bond scheme". The New Zealand Herald. 4 October 2020.
  34. ^ Daniel, Will. "Nobel laureate Paul Krugman says yes, Biden could mint a $1 trillion coin to avert the debt ceiling—but there’s a better option out there", Fortune (3 May 2023).
  35. ^ "SSRN-Why are British Premium Bonds so Successful? The Effect of Saving With a Thrill by Sebastian Lobe, Alexander Hölzl". Papers.ssrn.com. 19 March 2008. SSRN 992794. {{cite journal}}: Cite journal requires |journal= (help)
  36. ^ Aaron Brown, The Poker Face of Wall Street, John Wiley & Sons, 2006.
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