A BBC Report:
Oil has been discovered at a site on the Surrey/Sussex border and could be being extracted within two years.
Horse Hill Developments has been drilling an exploration well at Horse Hill, near Horley, just a few miles from Gatwick Airport.
Frack Free Surrey held a protest meeting on Sunday over fears the company may use fracking on the site.
The company says it guarantees that the fracking technique will not be used.
Hydraulic fracturing, or fracking, is a technique designed to recover gas and oil from shale rock. Opponents say the fracking process can cause small earth tremors.
Horse Hill Developments is linked to Angus Energy, which already operates wells at Brockham in Surrey and Lidsey in West Sussex.
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