The AIM-quoted explorer was the only junior among high profile names - such as BP, Exxon and China’s Nexen - to secure new projects off Ireland’s west coast.
Ireland’s government awarded the first tranche of fourteen licence options and a further tranche of awards is now anticipated in May.
News of the high calibre additions to Ireland’s offshore oil sector was taken as a major endorsement of an area that had largely been dismissed by sceptics.
Rockhopper shares were down 8% after its partner Premier Oil cancelled the curtailed the current drill programme, with the final well removed from the schedule, following ‘material operating issues’ with the Eirik Raude rig.
Pinewood Group (LON:PWS), operator of the film studio used in the Bond and Star Wars movies, could be up for grabs as the company announced a strategic review.
Hornby (LON:HRN) slumped, about 40%, as it warned over profits. The model maker and retailer previously suffered some well-publicised supplier difficulties, and the shares had steadily recovered prior to this week’s shock.
IT investment group Tern (LON:TERN) gained about 25% as its subsidiary Cryptosoft launched a new security product.
Alaska focussed explorer 88 Energy (LON:88E) rallied strongly on Wednesday as latest analysis of an exploration well showed it was closer to confirming a new shale play could be viable.
Drug developer ValiRx (LON:VRX) told advanced as it told investors it is readying to expand the reach of its lead drug, VAL201, which is currently being tested as a treatment for prostate cancer to female infertility condition endometriosis.