Rathlin Energy is expected to begin work within weeks at its new oil and gas exploration site in East Yorkshire.
A Nottinghamshire oil site has run out of time to drill any wells, even though it has been granted five consecutive planning consents.
IGas expects to submit a new planning application in north west England by the end of the year and to begin construction soon at its East Midlands shale gas sites.
A decision expected this month on plans by IGas to explore for shale gas at a second site in Nottinghamshire has been put back again.
The oil and chemicals firm INEOS has revealed details of what could be its first shale gas site in the UK.