Zano's mini-drones ready for launch

Europe's most successful Kickstarter project is finally ready to deliver the tiny drone that won more than £2.3m in backing last November.

That's the good news. The bad news is that the Zano drone which the company hopes to start sending to backers next week will not at first deliver what was promised last year.

BBC technology correspondent Rory Cellan-Jones travelled to Pembroke Dock to find out just how challenging it is to deliver on the promises you make in a crowdfunding project.