A geological expert has said that even if there is an 'oil bonanza' in the south, then the reserves could be difficult to extract.
Professor Andrew Aplin, from Durham University has identified three problems that he thinks could affect the exploitation of reserves identified in the Weald area, which spans Sussex, Hampshire, Kent and Surrey.
The British Geological Survey (BGS) in association with the Department of Energy and Climate Change (DECC) has completed an estimate for the amount of shale oil and shale gas in the Weald Basin in south-east England.
The range of shale oil in place is estimated to be between 2.20 and 8.57 billion barrels (bbl) or 293 and 1,143 million tonnes, but the central estimate for the resource is 4.4 billion bbl or 591 million tonnes.
The case for fracking is yet to be proven on environmental or economic grounds, the national officer of the GMB union has said, reacting to reports on the forthcoming British Geological Survey, which is expected to reveal huge oil reserves across Southern England.
A report published later today from the British Geological Survey is expected to reveal huge reserves oil reserves across Southern England, the BBC reports.
The study covers areas across Sussex, Surrey and Kent, is said to say there are several billion barrels of oil in shale rocks, that could be drilled through the controversial fracking process.
The Times is reporting that the government will offer money to areas outlined in a bid to stave off criticism amid growing concerns over the safety of the procedure.
Communities affected by controversial "fracking" will be offered huge sums of money in a bid to win hearts and minds, according to reports.
Communities in potential hacking sites, due to be identified in the British Geological Survey later today, will be offered an average of £800,000 in additional compensation efforts, the Times reports.
Mr Cameron will make the announcement as the survey is published, later today.
Wind farms are a "disease" which have blighted Britain's countryside and the country should embrace nuclear power and fracking to meet its energy needs, Boris Johnson has said.
The London Mayor accused the energy companies of "ruthlessly exploiting" a shortage of supply as he insisted the UK must stop "pussy-footing around" and start exploiting shale gas reserves.
The senior Tory said turning to a new generation of nuclear plants and fracking would cut energy bills and boost the economy.
Writing in The Sun on Sunday he said he was shocked by the number of wind turbines he saw on a recent drive to Scotland.
The PR firm representing the energy company Cuadrilla said six people have been arrested after anti-fracking protesters superglued themselves to Bell Pottinger's headquarters.
Police used an oscillator to cut a hole in a plastic pipe, to un-glue their hands that were super-glued to each other in an anti-fracking demonstration.
Anti-fracking protesters have blockaded the headquarters of energy company Cuadrilla while others have superglued themselves to a PR company used by the firm.
The action at Cuadrilla in Lichfield, Staffordshire, and at PR firm Bell Pottinger in central London comes on the first of two days of "mass civil disobedience" which campaigners have pledged to carry out to highlight their stance against fracking.