StockMarketWire.com - The FTSE 100 reversed into the red amid declines in miners and index heavyweight Royal Dutch Shell.

Fresnillo was among the casualties, down 2.6% at 932.4p while Shell slipped 1.4% to £25.81.

Around midday, the blue-chip index traded 0.6% lower at 7,570.

Brent crude oil added 0.2% to $76.14 per barrel.

MID AND LARGE CAP RISERS AND FALLERS

Luxury car maker Aston Martin announced its intention to float on the London Stock Exchange, which could result in its entrance to the FTSE 100.

Diploma chief executive officer Richard Ingram left the technical services supplier after only five months at the helm. Shares in the company rose 2.4% to £13.98 as investors responded to a positive trading update.

Software specialist Micro Focus commenced a planned share buyback programme with an initial tranche of up to $200m, helping the shares advance 2.1% to £13.08.

There was good news from Petrofac, up 1.7% at 671.4p, following a jump in first half net profit to $190m thanks to a rise in oil prices.

Marine services provider James Fisher advanced 3.3% to £18.44 on robust first half results with rising pre-tax profits and a hiked dividend.

SMALL CAP RISERS AND FALLERS

Telecom services provider Toople catapulted 197.5% higher to 0.6p on a major new wholesale contract with a 'well-known reseller' based in the south of England.

Sinclair Pharma soared 34.6% to 27p after agreeing to a 32p per share cash offer from a unit of China's Huadong Medicine.

Budget gym operator Gym Group struggled with a 14.4% drop in pre-tax profit in the first half of 2018 after an increase in exceptional costs from the acquisition of EasyGym. Investors took the news in their stride as the stock was unmoved 326.9p.

Marketing services company Jaywing won £2m of new business, helping the stock accelerate 8.1% to 20p. Story provided by StockMarketWire.com