Overnight, the Nikkei 225 is down -0.54% at 14,022 while the Hang Seng slips -1.67% to 20,313.
First off this morning, an update from Tullow Oil, a recent FTSE 100 big gainer. Boss Aidan Heavey says Tullow has made "major progress" from operations. In the first half of 2013 Tullow drilled nine exploration wells and 11 appraisal wells across the portfolio with a 60% overall success ratio.
The most significant well results were the Etuko-1 oil discovery in Kenya, claims Tullow. Exploration and appraisal activity across Tullow's operated acreage in Kenya continues to be "very successful".
"We continue," says the company, "to have an industry-leading exploration and appraisal programme with results from key frontier wells in Kenya, Ethiopia, French Guiana, Norway and Mauritania all expected in the second half of the year."
Next, a pre-close trading update for Domino's Pizza covering the 13 weeks to 30 June. Domino claims strong momentum in quarter one with sales rising +11.7% to £147.6m (2012: £132.2m). Like-for-like sales were also strong, running at +6.1% (2012: +8.1%) for the quarter, and +6.4% (2012: +5.7%) for the first half.
"This figure is expected to rise further as the Company continues to develop its in-house web and digital marketing expertise and launches the latest version of the website in the second half," says Domino.
Finally, a trading update from construction support services operator Carillion. First-half performance is in line with expectations and full-year targets unchanged says the company. As expected, the planned re-scaling of UK construction has led to lower first-half revenue, Carillion confirms.
However first-half underlying operating profits are expected to increase and new order intake appears strong with first-half orders and probable orders of £2.9bn. Net debt at the half year is expected to be around £270m.
"New order intake has remained strong and we have continued to win good quality work...Our expectations for the full year and our medium-term targets for growth, remain unchanged."