Homesick prop Mitchell Stringer has left London just three games into the new Super League season.
The 21-year-old forward, who comes from Barnsley, joined the Broncos at the start of 2004 after starring for National League side Sheffield.
"This is a decision both parties are comfortable with," said London chief executive Nic Cartwright.
"Mitch was missing home and he felt now was the right time to return to the north. We wish him all the best."