Arthur had expected the return of that strange blue box, as had Mollie, but he did not expect it to land the very same moment as Ron's Hogwarts letter arrived. (Neither had the occupants but we won't get into that.
Gracefully this time, the three occupants exited their box. The Weasley family, including Bill and Charlie, were sat at their table enjoying breakfast and Ron was excited about his letter arriving. "Oh…" The Doctor said, realising they were interrupting. "Didn't mean to barge in on your family meal.
"No, no!" Arthur said. "I should turn you three in for not having a license! You need a Time travel license to travel legally!"
"Not if you're us," The Wizard said. "It's a part of our biology. Did we say that we were Time Lords before?"
"No," Mollie said. "I don't believe you did!" Then she saw Rose eyeing the food. "Would you like some dear?"
"Yes, please!" Rose said eagerly. "This idiot forgets I need to eat more than him!" Rose jab the Doctor in the ribs.
"Oof!" The Doctor said. "Sorry…"
"Anyway," The Wizard said as Rose dug into the offered food. "Ron, mind if we talk to you for a minute, won't take long at all!"
The eleven year old looked around at his family. His parents looked wary, Fred and George looked intrigued, Percy looked disinterested, Bill was concentrating on something. Then suddenly he jumped up. "I knew I had seen you before!" Bill said pointing at the Doctor. "You're on the walls of some of the tombs I have to check for Gringotts!"
"Oh, right!" The Doctor said. "Yes I would be wouldn't I…? Don't suppose you uncovered a small grey box with a light and a bell attached did you?"
Bill looked confused. "Erm… no?"
"Oh well," The Doctor shrugged. "I'll have to make another…"
"So Do you mind Ron?" The Wizard asked again.
"I'd go," Charlie said. "This guy has to be able to do some incredible things if he's on the walls of enchanted tombs…"
Hesitantly, Arthur nodded at Ron. "Go on Ron."
As if it was his decision Ron grabbed a hand full of bacon and sausage and walked over to the Time Lords. "Okay step inside Ron!" The Doctor said, gesturing towards the TARDIS. "We'll be back out in a minute!"