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Risers and Fallers including Premaitha Health, Helius Energy and Clean Air Power

Last updated: 14:29 23 Mar 2015 GMT, First published: 15:29 23 Mar 2015 GMT

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The following are some of the notable major news-driven price changes as at 3pm.

RISERS

Premaitha Health (LON:NIPT) surged 36.99% to 25p on contract news. The diagnostics specialist has been awarded a three-year contract for its pre-natal test, known as IONA, to St George's University Hospitals NHS Foundation Trust.

It uses a sample of mother's blood to estimate the risk of a foetus having serious genetic disorders.

Renewable energy specialist Helius Energy (LON:HEGY) surged 155.38% to 4.15p as investors played catch up to Friday’s after-hours asset sale news. 

The biomass firm revealed then it had agreed a £12.3mln deal to sell its controlling stake in the Helius CoRDe Ltd business.

However, the rally is  bitter, sweet for investors. The firm plans to get shot of its CoRDe business for £12.3mln, delist from AIM and return cash to shareholders.

Challenger Acquisitions (LON:CHAL), up 62.12% to 53.50p. Speculators are still getting on board after the recently-listed investment company announced a co-operation deal last week with Starneth, the firm behind the London Eye. The market value of the company was just £1.1mln when it floated on 19 February; it is now worth £5.1mln.

FALLERS

Clean Air Power (LON:CAP), down 34.75% to 1.93p. The group's full-year loss deepened to £6.34mln from £2.00mln in 2013, while revenue fell to £6.76mln from £9.93mln.

But, on the more positives side, the dual-fuel engine management software developer has been awarded an additional one year extension to its two-year funded research project with Brunel University in London.

Spaceandpeople (LON:SAL), down 17.9% at 55.75p. The firm suffered as it reported on what it called a “challenging” 2014.

Pre-tax profit at the marketing company dropped to £1mln in the year, down from £2.6mln in 2013, as a rise in its cost of sales outpaced revenue growth.

As a result the company, which markets and sells advertising and promotional space in shopping centres, said it would slash its full-year dividend in half to 2p. 

Egdon Resources (LON:EDR) down 10.61% to 7.375p as Europa Oil & Gas (LON:EOG) and the firm revealed that Kiln Lane, the latest onshore UK drilling project, has not been a success.

The Kiln Lane exploration well, located about 25 kilometres from the Wressle discovery, encountered significant oil and gas shows during drilling, but, subsequent analysis has shown the reservoirs to be water wet.

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Following are some of the major news-driven price changes as at 11.15am.

RISERS

Immedia (LON:IME), up 21.2%. The shares advanced 3.5p to 20p after a bit of share shuffling by members of the Horrocks family.

Metal Tiger (LON:MTR), up 20.8%. The natural resources investment firm is now able to self-finance its activities, it told investors.

Silence Therapeutics (LON:SLN), up 17.9%. The company’s lead drug candidate has shown early signs of efficacy when used in combination with traditional chemotherapy to treat people with terminal pancreatic cancer.

FALLERS

Karelian Diamond Resources (LON:KDR), down 16.4%. Investors banking profits after Friday’s stonking rise, which was sparked by the discovery of a potential new diamond source in Finland.

Europa Oil & Gas (LON:EOG), down 11.9%. The Kiln Lane-1 well on licence PEDL 181 in north-east Lincolnshire, has been plugged and abandoned. Europa is operator of, and has a 50% working interest in, PEDL 181, which covers an area of over 540 square kilometres in the East Midlands Petroleum Province. Egdon Resources and Celtique Energie Petroleum each have a 25% interest in the licence.

ScS Group (LON:SCS), down 9.7%. Furniture and floorings seller disappointed with its first set of results since listing at the end of January. It made an underlying loss of £3.0mln in the 26 weeks to 24 January, versus a loss of £1.3mln a year earlier. The firm cushioned the blow by revealing sales order intake was up 7.5% on a like-for-like basis for the first 33 weeks of the financial year.

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