“Housebreaking her was in my kitchen, and it was a nightmare,” Mr. Swanhaus said.

Together we had weathered layoffs, a cross-country move, multiple hospitalizations from my cystic fibrosis and the housebreaking of two terrier puppies.

Drivers with convictions for offences such as assault, housebreaking and drink-driving were issued taxi licences last year, a BBC Scotland investigation has revealed.