UK petrol prices hit four-year low
The average UK price of petrol has dropped below £1.20 a litre - its lowest level since December 2010, according to government figures.
Oil has fallen from about $115 (£72) per barrel in June to about $65 per barrel, a decline of almost a half.
By comparison, petrol prices in the UK have fallen from a high of about 131.11p per litre in the summer to 119.83p - a decline of about 9%.
Industry correspondent John Moyland reports.