They are two of the most photographed young families in the world, whose every move is captured by banks of lenses.

Now a Royal trip to Canada may unite the two most telegenic families on the planet in a visit being billed as a “match made in paparazzi heaven”.

The Duke and Duchess of Cambridge will fly to Canada late next month for an official visit featuring bear spotting and trips to unspoilt temperate rainforest, after accepting a formal invitation from the country’s prime minister, Justin Trudeau.