Premium Bond

A Premium Bond is a lottery bond issued by the United Kingdom government since 1956. At present it is issued by the government's National Savings and Investments agency.

An ERNIE money box

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 (1.40% per annum since 2017)[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, for Electronic Random Number Indicator Equipment.[2] Prizes range from £25 to £1,000,000 and (since 2017) the odds of a £1 bond winning a prize in a given month are 24,500 to 1.[3]

Investors can buy bonds at any time and they must be held for a calendar month before they qualify for a prize. 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 December 2019 there are 84.3 billion eligible Premium Bonds,[5] each having a value of £1.

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 22 million people,[5] equivalent to about 1 in 3 of the UK population.

History

The term "premium bond" has been used in the English language since at least the late 18th century,[6] to mean a bond that earns no interest but is eligible for entry into a lottery.[7]

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[9] and encourage people to save.[10] 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.[11]

ERNIE
ERNIE 1

ERNIE is a hardware random number generator. The first ERNIE was built at the Post Office Research Station by a team led by Sidney Broadhurst. The designers were Tommy Flowers[12] and Harry Fensom and it derives from Colossus, one of the world's first digital computers.[13][14] It was introduced in 1957,[2] with the first draw on 1 June, and generated bond numbers from the signal noise created by neon tubes. The name is an acronym for Electronic Random Number Indicator Equipment. ERNIE 1 is in the collections of the Science Museum in London and was on display between 2008 and 2015.[14]

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 is 500 times faster than the original and generates a million numbers an hour; these are 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; the original ERNIE used a gas neon diode. In contrast, pseudorandom numbers, although sometimes simply referred to as random, are produced deterministically by the algorithm used to generate them. The randomness of ERNIE's numbers derived from random statistical fluctuations in the physical processes involved. 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.[15]

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.

Winning

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[16] 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.[17][18][19] However, in-person visits have been suspended during the 2020 COVID-19 pandemic.[20]

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.[21] Older winning numbers (more than 18 months old) can also be checked in the London Gazette Premium Bonds Unclaimed Prizes Supplement.[22]

Odds of winning

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 credit crunch, 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.[23][24] 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.[25] The odds reached 26,000 to 1 by October 2013 and then reverted to 24,500 to 1 in November 2017.[3]

With odds as of June 2018 of 1/24500,[26] the expected number of prizes for the maximum £50,000 worth of bonds is 24 per year. The calculation is 1/24500 x 12 (draws per year) x 50,000 (number of bonds held).

According to the Premium Bond Probability Calculator[27] on MoneySavingExpert.com, which updates odds each month, the odds of a prize as of June 2018 are:

  • Hold £100 over a year and the chance of winning something is 4.78%.
  • Hold £1,000 over a year and the chance of winning something is 38.7%.
  • Hold £10,000 over a year and the chance of winning something is 99.3%.

Prize fund distribution

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. The following table lists the distribution of prizes on offer in the December 2017 draw.[28]

Prize band Prize value Estimated number of prizes each month
Higher value
5% of the prize fund		 £1,000,000 2
£100,000 4
£50,000 9
£25,000 18
£10,000 42
£5,000 87
Medium value
5% of the prize fund		 £1,000 1,660
£500 4,980
Low value
90% of the prize fund		 £100 22,792
£50 22,792
£25 2,853,919
Total value
(December 2017 – estimated)		 £83.1m 2,906,305

In other countries
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 programs 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.[29] Outstanding bonds as of September 2013 were around 28.9 billion SEK.[30]
  • 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.[31] The bonds were generally identified by their color, for instance the blue premium bonds were issued in 1948, and were redeemed in 1998 (10 years + 4 10-year extension).[32] The first 200 DKK of each prize was tax free, the rest taxed at only 15% (compared to 30% or more for ordinary income).[33]
  • In New Zealand, "Bonus Bonds" were established by the NZ Government in 1970 and sold to the ANZ Bank in 1990.[34]

Academic studies

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.

References
  1. "Interest Rates". National Savings and Investments. Retrieved 13 December 2017.
  2. "Meet ERNIE". National Savings and Investments. Retrieved 27 July 2015.
  3. NS&I boosts premium bonds odds - Financial Times, 10 November 2017
  4. "Premium Bonds investment limit rises".
  5. ThisIsMoney 2 December 2019
  6. Journal of the Royal Statistical Society 52 316 (1889)
  7. Oxford English Dictionary
  8. Horne, Alistair (1989). Macmillan 1894–1956, volume I. London: Macmillan. p. 383. ISBN 0-333-27691-4.
  9. "Fifty years of Premium Bonds". This Is Money. Associated Northcliffe Digital Ltd. Retrieved 19 January 2008.
  10. "The History of Premium Bonds". This Is Money. Associated Northcliffe Digital Ltd. Archived from the original on 4 December 2008. Retrieved 7 April 2009.
  11. "The history of Premium Bonds". NS&I. Archived from the original on 2 January 2010. Retrieved 7 April 2009.CS1 maint: unfit url (link)
  12. "BBC Inside Out – Premium Bonds". bbc.co.uk. Retrieved 14 January 2010.
  13. Colossus: the secrets of Bletchley ... – Google Books. 23 February 2006. ISBN 9780192840554. Retrieved 14 January 2010.
  14. Schofield, Jack (13 June 2008). "First ERNIE computer picked for Science Museum". the Guardian. Retrieved 27 July 2015.
  15. Collinson, Patrick (1 March 2019). "Premium bond Ernie takes quantum leap into fifth generation". The Guardian. The Guardian. Retrieved 1 March 2019.
  16. "Premium Bonds prize checker". National Savings and Investments. Retrieved 28 March 2011.
  17. https://www.nsandi.com/how-will-i-know-ive-won
  18. https://www.thisismoney.co.uk/money/saving/article-7123447/How-Im-Premium-Bond-millionaire.html
  19. https://www.thisismoney.co.uk/money/saving/article-2221468/Agent-Million-interview-The-1m-Premium-Bond-news-woman.html
  20. https://www.express.co.uk/finance/personalfinance/1281082/premium-bonds-nsi-agent-million-check-winnings
  21. "Premium Bond Prize Checker". Retrieved 10 April 2012.
  22. "London Gazette Unclaimed Prizes supplement". Retrieved 10 April 2012.
  23. Butterworth, Myra; Wallop, Harry (5 December 2008). "Savings". Telegraph. London. Retrieved 14 January 2010.
  24. Jones, Rupert (6 December 2008). "Now bond prizes are at a premium | Money". The Guardian. London. Retrieved 14 January 2010.
  25. "Higher payouts from Premium Bonds". BBC News. 16 September 2009. Retrieved 14 January 2010.
  26. "NS&I Premium Bonds". Retrieved 22 October 2019.
  27. "Premium Bond Calculator". Retrieved 30 July 2007.
  28. "NS&I Premium Bond prize draw details". Nsandi.com. Retrieved 3 December 2017.
  29. "Swedish premium bonds, English summary". Swedish Government. Retrieved 12 September 2013.
  30. "List of outstanding Swedish Premium bond series". Swedish Government. Retrieved 12 September 2013.
  31. "Redeeming of Premium Bonds (in Danish)". Danish Government. 19 November 2012. Archived from the original on 4 October 2013. Retrieved 12 September 2013.
  32. "Proclamation on renewal of two State Premium Bond Loans". Danish Minister of Finance. 18 December 1987. Retrieved 12 September 2013.
  33. "Law authorizing the issue of domestic state loans". Queen of Denmark and Danish Parliament. 28 March 1984. Retrieved 12 September 2013.
  34. "Brian Gaynor: Who are the real Bonus Bonds winners?". nzherald.co.nz. 8 September 2018.
  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 requires |journal= (help)
  36. Aaron Brown, The Poker Face of Wall Street, John Wiley & Sons, 2006.
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