BBC news:

The UK Consumer Prices Index (CPI) annual inflation rate rose to 4% in January, up from 3.7% in December, as the effects of the VAT rise were felt.

Higher oil prices also meant inflation remained well above the 2% target.

Retail Prices Index (RPI) inflation – which includes mortgage interest payments – rose to 5.1% from 4.8%.

The CPI figure is the highest since November 2008, and will put pressure on the Bank of England to lift interest rates to curb accelerating inflation.

The CPI measure has now been one percentage point or more above target for 14 months.

Source: http://www.bbc.co.uk/news/business-12462901