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DECC does not forecast the pump prices of unleaded petrol or diesel. However, we do publish long-term oil price projections. Further details are available through the following links:
http://www.berr.gov.uk/energy/environment/projections/recent/page26391.html
http://www.berr.gov.uk/files/file51365.pdf
Assumptions about a weighted average of road fuel prices, based DECC’s oil price projections, are also used in our Updated Energy Projections. These assumptions are available through the following links:
http://www.berr.gov.uk/energy/environment/projections/index.html
http://www.berr.gov.uk/files/file48514.pdf