St George Illawarra Dragons were fined £62,300 for their handling of Josh Dugan’s head injury sustained against Cronulla on Sunday

Three Australian National Rugby League sides have been given record fines for breaching concussion protocols.

Gold Coast Titans were fined £93,500 (150,000 Australian dollars) for incidents involving three players, with St George Illawarra Dragons and Newcastle Knights charged £62,300 (A$100,000) each for single cases.

The clubs have until Friday to respond.

“These are the heaviest fines proposed by the game for concussion breaches,” said NRL chief Todd Greenberg.