Nighthawk Energy PLC (LON:HAWK) saw shares fall 5.8% in late-afternoon trading to 0.4p as the oiler posted a drop in production.
During the three months from November 2017 to January 2018, net production totalled 66,971 barrels, down from 86,418 for the same period a year ago.
The company also said it had completed non-routine workovers on several of its wells.
Meanwhile, Gaming Realms PLC (LON:GMR) shares dropped 3.9% to 9.7p as the company warned the sale of its portal Bingoport would reduce short term earnings before interest, taxes depreciation and amortisation (EBITDA).
The social games publisher also said it had sold its affiliate portals bingeport and freebingohunter to 1ST Leads Ltd for ?2.4mln, with sale proceeds going toward brand marketing and content development.
Gaming Realms also reported a swing to a profit for 2017, with EBITDA at ?700,000 up from a ?1.7mln loss the previous year from revenues of ?31.6mln, down from ?32mln previously.
Trading Emissions PLC (LON:TRE) saw its shares add 5.6% in mid-afternoon trading to 3.2p as the company confirmed a completion date for the sale of a solar asset.
The renewable energy investor said that it expected to complete the sale of its Italian solar operating subsidiary, Solar Energy Italia 1 Srl, on 4 April 2018.
Trading Emissions originally expected to receive ?,?7.97mln from the sale, however specific undisclosed factors led the company to increase the forecasted payout to ?,?8.64mln.
Meanwhile, Next Plc (LON:NXT) shares climbed 7.4% to 4,975p as expectations of a 'more benign' pricing environment for the next year diverted from falls in sales.
The clothing and homewares retailer reported pre-tax profit for the year ended January 27 of ?726.1mln, down 8.1% from the previous year. This was around the midpoint of Next's revised guidance range of between ?718mln- ?732mln which was given in January.
Next retail sales fell 7.9% to ?2.12bln, while Next online sales rose 9.2% to ?1.89bln. Next Brand sales fell 0.6% to ?4.01bln, with total Next group sales coming in at ?4.12bln, down 0.5% year-on-year.
George Salmon, equity analyst at Hargreaves Lansdown, said: "While the Retail business is clearly under pressure, it's hard not to be impressed by the work Next has done improving the Online division."
He added: "Extra marketing has paid dividends, and customer numbers in the lucrative credit business are stabilising. Looking ahead, Next is confident 2018 won't be a repeat of 2017, a clear positive for shareholders."
Elsewhere, shares in Cadogan Petroleum PLC (LON:CAD) gushed 6.6% higher to 10p as it told investors that the Blazh-3 well, on the Monastyretska license in Western Ukraine, has shown improved output following the completion of a workover.
The well's production increased to 125 barrels per day (bpd), up from 45 bpd, and it is now being monitored before a decision is made on further enhancements.
The Blazh-3 programme was the second of three work overs, following on from the Blazh-1 well which saw production double back in February.
Robinson PLC (LON:RBN) shares tumbled 10% in lunchtime trading to 81.5p as the packaging manufacturer reported sharp drops in annual profits for 2017.
Pre-tax profits fell to ?630,000 from ?1.6mln the previous year due to a reduced gross margin of 19% from 23% caused by the lag effect of increasing resin prices and higher input costs from a weaker pound.
However, revenue for the period rose 9% to ?29.8mln, mainly due to positive exchange rate movements and increased resin prices as well as higher volumes as new business came into production.
Robinson chairman Richard Clothier said: "I am pleased to report that new business has been secured that has offset the previously lost trade and is the basis for growth that has started to come through,"
He added: "New business now in the pipeline will require more investment in plant and this will use more of our borrowing capacity. Higher earnings to justify this will be essential and we are actively working to achieve the efficiencies that are needed to rebuild margins. This is receiving close attention and will take time but we do expect higher sales in 2018."
Elsewhere, Smiths Group PLC (LON:SMIN) shares shed 6% to 1,422p after the engineer reported a 12% drop in first-half profits as revenue fell, though it still reiterated its full-year guidance.
The FTSE 100-listed firm saw its pre-tax profit drop to ?217mln for the six months to the end of January 2018, down from ?248mln in the same period a year earlier and below expectations for ?245mln.
Mike van Dulken, head of research at Accendo Markets, commented that the results meant the group had only increased its interim dividend 1.8%, less than 2.2% the same time last year and much less than the 3.3% climb in final dividend last October.
He said: "This is in contrast with many other corporates, handing out bigger percentage increases in an effort to keep shareholders onside amid market uncertainty and share price declines."
"Matters, however, are made worse by the outlook statement (always key) suggesting FX headwinds are set to remain. This takes the shine off management's reiteration of 2018 guidance thanks to a strong order book, new product launches and confidence in group growth acceleration in H2 [second half of the year]" he added.
In other news, Fevertree Drinks PLC (LON:FEVR) saw shares sink 4.6% to 2,820p after one of its founders sold a 2.6% stake in the premium tonic water maker.
Deputy chairman Charles Rolls offloaded almost double the number of shares he originally intended to sell after receiving significant demand from institutional investors.
Rolls, who is co-founder with chief executive Tim Warillow, now owns an 8.6% stake in the company.
Brazil-focused Serabi Gold PLC (LON:SRB) saw shares jump 28% mid-morning to 4.6p after news of a US$15mln investment from a private equity group.
The gold miner said mining-focused Greenstone Resources will put in US$15mln to acquire a 29.82% interest in the company via a subscription for over 297mln shares.
Serabi added that Mark Sawyer, a partner of Greenstone Capital, would join the board with immediate effect.
Meanwhile, UK Oil & Gas Investments PLC (LON:UKOG) saw shares advance 12.5% to 1.35p as it and Alba Mineral Resources PLC (LON:ALBA) updated on the planning progress at the closely followed Horse Hill oil project in southern UK.
Both are members of the consortium behind Horse Hill Developments Ltd (HHDL), which has a 65% participating interest in the project.
Alba owns 18.1% interest in Horse Hill Developments Ltd, while UKOG has a 48% stake.
In other news, shares in The Kellan Group plc (LON:KLN) rose 6.9% to 0.78p as the recruiter swung to profit in its full-year results.
The company reported a pre-tax profit of ?457,000 for 2017, up from a ?2.5mln loss the year prior as goodwill impairment charges disappeared.
Revenue for the year remained broadly flat, rising 0.5% to ?22mln, while administrative expenses dropped to ?5.9mln from ?6.4mln the year prior.
Crawshaw Group PLC (LON:CRAW) saw its shares butchered 33.6% to 3.7p in early morning trading as it reported two board resignations and challenging trading for the first part of 2018.
The value butcher group said Noel Collett, company chief executive, was stepping down to pursue other opportunities while Alan Richardson, chief financial officer, intended to leave the business in early May 2018.
Crawshaw added that trading for the first six weeks of the financial year had been challenging, with poor weather conditions exacerbating difficulties, as it said full-year results for 2017 were to be announced in April.
Meanwhile, drug maker Indivior PLC (LON:INDV) shares tumbled 8.5% to 373p after it said it is to appeal against a ruling by the District Court of Delaware.
The court found that pharmaceutical company Alvogen has not infringed on Indivior's patents with its generic version of the UK company's Suboxone, one of the best-selling treatments for heroin addiction.
Unless Indivior can get the ruling reversed, it would not be able to rely on three US patents to prevent Alvogen from marketing a generic film alternative to Suboxone in the US and might have increased difficulty in successfully defending its intellectual property against other drugs makers looking to produce copycat versions of Suboxone.
Elsewhere, shares in home safety product maker Sprue Aegis PLC (Sprue) (LON:SPRP) slid 22% to 147.5p after a distribution agreement was terminated.
The company said BRK Brands Inc, a partner in a distribution agreement, had sent a notice to Sprue alleging breaches relating to trademarks. As a result, BRK terminated the agreement on March 22 and would not be purchasing any unsold products.
In light of the events, the group also announced the date for its full-year results for 2017 would be pushed back from its original date in late March 2018.
UK Oil & Gas (LON:AIM) saw shares advance over 6% in early deals, as it and Alba Mineral Resources PLC (LON:ALBA), also higher, updated on the planning progress at the closely followed Horse Hill oil project in southern UK. Both are members of the consortium behind the group Horse Hill Developments Ltd (HHDL), which in turn has a 65% participating interest in the project.
ImmuPharma PLC (LON:IMM) said the database lock of its phase III clinical trial of Lupuzor, for the autoimmune disease lupus, is expected on April 6. This is a significant milestone. It denotes the end of the pivotal study, but also prevents unauthorised or unintended changes to the information garnered.
SDX Energy Inc (LON:SDX, CVE:SDX) financial results confirmed a substantial improvement in revenue as it continues to grow operations in Egypt and Morocco. Chief executive Paul Welch described 2017 as an "exceptional year" for the company as it benefitted from its acquisition of Circle Oil's assets and had success with the drill-bit.
Primary Health Properties PLC (LON:PHP), the owner of medical centres and doctors' surgeries, is to raise up to ?100mln by issuing shares at 114p. The price represents a discount of 5.3p to last night's closing share price.
Canadian Overseas Petroleum Limited (LON:COPL) boss Arthur Millholland told investors that the company is looking forward to an upcoming appraisal of the NOA oil discovery, within the OPL 226 area offshore Nigeria. "The past 12 months, our focus was, and continues to be, on developing our highly prospective oil appraisal and development project at OPL 226," he said.
i3 Energy Plc (LON:I3E) told investors that it continues to see progress with its partnering efforts, with talks ongoing with multiple potential joint venture partners. In late 2017, the junior North Sea oiler kicked off the process for a potential farm-out, that could deliver funding to develop the Liberator field.
ADES International Holding Ltd (LON:ADES), the offshore and onshore oil and gas drilling and production services provider, has signed a US$450mln syndicated credit facility.
Metminco Limited (LON:MNC) (ASX:MNC) said it is now seeking to raise A$5.7mln through a revised rights issue as it shifts its strategy and has named a new executive chairman. The AIM-listed miner said the rights issue would now be on the basis of 9.5 for two 2 renounceable entitlement issues at A$0.8 each to raise circa A$5.6mln combined with a placement of 19mln shares, also at A$0.8 each, to raise around A$150,000.
Premier African Minerals Limited (LON:PREM) has welcomed changes to the indigenisation legislation in Zimbabwe, which potentially pave the way for its holding in tungsten mine RHA to be restructured.
Former diamond miner Golden Saint Resources PLC (LON:GSR) is to cancel its AIM listing ahead of a planned reverse takeover of EMS Wiring Systems. Once that deal completes Golden Saint will re-list on the standard section of London's main market, but until then shareholders will have no formal market on which to trade their shares.
Wolf Minerals Limited (ASX: WLF) (LON:WLFE) announces that an updated corporate presentation is now available for download from the specialty metals producer's website.