aircraft

The incident- known as a quick reaction alert - is not uncommon and involves RAF crews shadowing Russian military aircraft near UK airspace.

RAF fighter jets have been scrambled from Scotland after a Russian military aircraft was detected flying close to UK airspace.

It is understood this is the second time in three months the Royal Navy and RAF have detected Russian ships and aircraft within a week of each other.

Germany's Volocopter promised its electric-powered, two-seater aircraft, the VoloCity, would be ferrying passengers around the city.

However, faced with the massive cost of getting such novel aircraft approved by regulators and then building up manufacturing capabilities, some investors are bailing out.