Princess Charlotte throws a tantrum as the family try to board a helicopter

This week’s gruelling royal tour has seen them being virtually dragged onto planes by their parents the Duke and Duchess of Cambridge as the family was ferried between Germany and Poland.

But while Princess Charlotte erupted into a mini-tantrum, Prince George needed little encouragement when given the chance to see the inside of a helicopter at Hamburg airport.

The third in line to the throne, who turns four tomorrow, couldn't hide his excitement as he took a peek at the interior of two aircrafts before waving goodbye to the German city and heading home.

One of the helicopters George explored was the H145 - also known at the E145 - the same model as the one his father flies with the East Anglian Air Ambulance service.

Adorable Prince George looked ecstatic as the Cambridges bid farewell to Hamburg at the end of their five-day tour of Germany and Poland - but his little sister Charlotte was less happy, after taking a tumble on the tarmac.