£1 in 2008 is equivalent in purchasing power to about £0.99 in 2009.
The pound had an average **deflation** rate of -0.53% per year since 2008, producing a cumulative price change of -0.53%.
Purchasing power *increased* by 0.53% in 2009 compared to 2008. On average, you would have to spend 0.53% *less* money in 2009 than in 2008 for the same item.
This is an example of **deflation**.

This means that prices in 2009 are 0.53% lower than average prices since 2008, according to the Office for National Statistics composite price index.

The 2008 inflation rate was 3.99%. The inflation rate in 2009 was -0.53%. The 2009 inflation rate is lower compared to the average inflation rate of 2.70% per year between 2009 and 2021.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 2009 was 843.00. It was 847.50 in the previous year, 2008. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation. Because the 2009 CPI is less than 2008 CPI, negative inflation (also known as deflation) has occurred.

⌃

Average inflation rate | -0.53% |

Converted amount (£1 base) | £0.99 |

Price difference (£1 base) | £-0.01 |

CPI in 2008 | 847.500 |

CPI in 2009 | 843.000 |

Inflation in 2008 | 3.99% |

Inflation in 2009 | -0.53% |

£1 in 2008 | £0.99 in 2009 |

Our calculations use the following inflation rate formula to calculate the change in value between 2008 and 2009:

CPI in 2009
CPI in 2008

×

2008 GBP value

=

2009 GBP value

Then plug in historical CPI values. The U.K. CPI was 847.5 in the year 2008 and 843 in 2009:

843847.5

×

£1

=

£1 in 2008 has the same "purchasing power" or "buying power" as £0.99 in 2009.

To get the total inflation rate for the 1 years between 2008 and 2009, we use the following formula:

CPI in 2009 - CPI in 2008CPI in 2008

×

100

=

Plugging in the values to this equation, we get:

843 - 847.5847.5

×

100

=

Politics and news often influence economic performance. Here's what was happening at the time:

- Black Monday: stock markets crash all over the globe, resulting in enormous drops in global stock markets and halts in trading.
- Fidel Castro retires as Cuban President due to ill health, after nearly 50 years in power.
- Barak Obama becomes the first African American to receive the presidential nomination of his party.

Raw data for these calculations comes from the composite price index published by the UK Office for National Statistics (ONS). A composite index is created by combining price data from several different published sources, both official and unofficial. The Consumer Price Index, normally used to compute inflation, has only been tracked since 1988. All inflation calculations after 1988 use the Office for National Statistics' Consumer Price Index, except for 2017, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “Inflation Rate in 2009 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 19 Oct. 2021, https://www.officialdata.org/UK-inflation-rate-in-2009.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.

Average inflation rate | -0.53% |

Converted amount (£1 base) | £0.99 |

Price difference (£1 base) | £-0.01 |

CPI in 2008 | 847.500 |

CPI in 2009 | 843.000 |

Inflation in 2008 | 3.99% |

Inflation in 2009 | -0.53% |

£1 in 2008 | £0.99 in 2009 |