StockMarketWire.com - UK stocks opened weaker on Tuesday following heavy selling on Wall Street fueled by concerns about slowing growth in China and an expected hike this week in US interest rates.

At 0855 the benchmark FTSE 100 index was down 43.23 points, or 0.6%, at 6.730.01.

Power utility National Grid fell 3.9% after announcing that it was disappointed with consultation documents published by the UK regulator, claiming it made it harder to provide fair returns to shareholders.

Oil services company Petrofac climbed 2.7% after it said it was trading in line with expectations, having won $5bn worth of orders in the year to date.

Following service company Wood Group, however, fell 3.1%, despite announcing that it had won a $66m contract to supply technologies to the UK's Sellafield nuclear site.

Anglo American shares eased back 0.2% even as the company increased sales at its De Beers diamonds unit.

Fishing tackle and equipment retailer Angling Direct rose 1.2% on announcing that it remained confident of meeting full year expectations as international sales nearly doubled.

Digital imaging and sensing company Scientific Digital Imaging gained 3.9% as it booked a 42% rise in first-half profit, buoyed by organic revenue growth and new contributions from acquisitions.

Inspiration Healthcare added 2.8% on the back of news that it had signed an exclusive agreement with 'a major US university' for rights to develop a new respiratory device.

Agriculture and engineering group Carr's gained 3.0% as it announced that chairman Chris Holmes would stand down in January 2020. Story provided by StockMarketWire.com