A two-day strike at the start of July by French air traffic controllers has caused huge disruption with hundreds of flights cancelled and many more delayed - but are more strikes likely over the summer?

A walkout by French air traffic controllers to protest against staff shortages and ageing equipment forced airlines to cancel hundreds of flights on Thursday, just as the summer season gets under way.

French air traffic controllers staged the second day of a two-day strike on Friday, prompting the cancellation of hundreds of flights not just to-and-from France but also overflying the country as summer holidays kick off.