Business activity in the euro zone rebounded in July, according to Markit's closely-watched Purchasing Managers' Index (PMI), although concerns remain about France's sluggish economy.

The flash composite PMI for the whole of the euro zone came in at 54.0, up from a six-month low of 52.8 in June, where a number above 50 signals expansion. This was a three-month high, and surpassed expectations of 52.8 by analysts in a Reuters poll.